Rainbow's Curse

by LivingBL

Rating: mature
Tags: My Little Pony: Friendship is Magic, Main 6, Rainbow Dash, Comedy, Adventure, Sex, Twilight Sparkle
Length: 55412

Rainbow Dash is in a little trouble - After a great party, she woke up wearing a diaper that won't come off no matter what she tries. Can she get the diaper off and make it to the bathroom before she has an accident? (Spoiler alert. No.)

Contains heavy Adult Foal/Diaper content, as well as some sexual moments eventually, so if you're not into that then leave now.

Rainbow Dash wakes up after a party she can barely remember, and now she's wearing a diaper. Worse - It won't come off, even when she gets help from Twilight Sparkle. And that's only the beginning: The curse continues to progress, and they can't figure out how to reverse its effects.

This takes place in the Season Two timeline, more specifically just after the Hearth's Warming Eve episode. This is mainly to keep the plot running smoothly and fix some logistical issues, since there are a few minor problems that would screw with the plot if this were to take place anytime else. I can't say exactly what all of these issues are, since some of them are spoiler-ey, but it's pretty minor one way or the other so it'll be pretty negligible. The whole cast is involved, but the plot will mostly focus around Rainbow Dash, with Twilight Sparkle showing up pretty heavily and the rest of the Mane 6 getting smaller appearances.

Cover Art by Oliver-England, on DeviantArt. He's awesome! Check him out!

Edited and occasionally co-written by Twinkie Hoof. He is also awesome! Check him out, too!

Published 2015-02-27 03:50:02 UTC
Last updated 2015-12-02 06:16:14 UTC

Chapter One

Rainbow Dash groaned, waking up to the sound of birds. She hadn't set an alarm, knowing she'd be sleeping in late after the night's Hearth's Warming Eve celebrations. So, when she kicked off the covers and told herself she had to get up, she didn't have much of an idea how late it was. Pinkie Pie had totally outdone herself at the after-party, and though Rainbow didn't remember much after her fifth glass of cider, she knew it had been one heck of a night.

It was after the pageant, the exchange of gifts, and the traditional celebrations things had gotten awesome. They had stayed up late into the night, long after Luna raised the moon and most ponies would be in bed. By the time Rainbow Dash had made it home, she was dead on her hooves, but still so wired from the party that she couldn't sleep just yet. So, she had opened what presents hadn't been given to her in Canterlot. A tube-shaped package from her dad containing a vintage Wonderbolts poster, a few cards sent by old friends from flight school, and a gift basket with no note. Rainbow Dash guessed that the mail-pony had most likely lost it again, but as long as the basket and its contents were intact, Rainbow Dash didn't care. She ate some chocolate from the basket, hung up the poster, said goodnight to Tank, and went to bed on her cloud fluff mattress perhaps an hour before the sun rose.

It had been a good night, but now Rainbow Dash had a headache, she felt terrible, and she just wanted to sleep for a week. Still, she had to feed Tank, she herself had to eat something, and it wouldn't be good for her pratice regimen if she skipped for a week just to get bed rest recovering from a party. So, she forced herself to climb out of bed and get to her hooves, feeling groggy as she steadied herself. Her mattress was a cloud, the same as her floor, but the floor-cloud had been packed a bit more densely so at the very least it didn't feel like she was rolling out of bed into another bed or else she may have been tempted to curl up and go right back to bed. There was a quiet crinkling noise as she got out of bed, which gave her pause, but when she didn't hear anything else she dismissed it as her imagination.

Rubbing her forehead, she considered her options for a moment before trotting towards the bathroom. She needed an aspirin, and the cider and party food last night left her in need of the little filly's room. Her trot felt a little awkward, though she couldn't place why. Then again, she felt so crappy that a little stumble in her walk wasn't worth noting. Blinking and stretching her wings, she fumbled with the bathroom door handle and headed in.

As usual, her bathroom was a bit of a mess. She hadn't done laundry in a week and had no clean towels, the toothpaste and soap were drying on the counter, and her bathroom mirror was hanging open. Rainbow knew she needed to address the chaos at some point, but between her work schedule, her training schedule, and her nap schedule, she never seemed to find the time. Grabbing the bottle of aspirin, she tugged at it with her mouth, grumbling about the filly-proof caps. Straining, she finally got the bottle open and swallowed a couple of the pills with water from the faucet. Tossing the bottle to the side to join the debris, she closed the mirror to see her reflection. Blinking a couple of times, she needed a second to take in what she saw.

"AAAAH!" She screamed, looking over her shoulder in shock at the puffy white diaper taped between her hind legs. There was a cutesy-wootsy cartoon version of her cutie mark printed on the front, and it was bulky enough to splay her hind legs out a little bit, which at least explained the difficulty she had been having with walking. She didn't remember anything that would have led to... that, but what she was most concerned about at the moment was making sure nopony saw. (If pictures of this somehow ended up in the wrong hooves, she could easily see an unscrupulous pegasus blackmailing her to throw a race or contest or something.)

Reaching, Rainbow Dash grabbed one of the tapes with her hoof and gave it a yank. It didn't budge, which concerned her a bit, but it didn't slow her down. Using two hooves now, flapping her wings to keep from falling over, she grabbed the waistband and yanked, intending to simply tear the diaper off by force. That attempt failed too, and the diaper just stretched momentarily before snapping back in place as soon as she let go. Yelping, she tried grabbing the diaper her wings too, hoping that a little more force would do the trick. As soon as she tried that she lost her balance and fell forward, landing in a heap on the floor.

Getting to her hooves, she tried a few more futile yanks at the elastic waistband, accomplishing little more than making the diaper crinkle. "No way!" She said anxiously, giving up and trotting in place nervously. Clearly the diaper was enchanted or something, but knowing that wasn't much help unless she had a way of doing something about it. She wasn't enough of an egghead to know anything about clothing enchantments, and without a horn she couldn't cast any counterspells even if she knew what counterspells to cast. It would probably wear off in a couple hours if it were just a prank, but that was no good.  She gave a sidelong glance at the toilet a few feet away, crossing her hind legs and trying to think about something besides how much she had to pee.

What she needed was somepony smart... Somepony who could do magic, of course, and somepony who could deal with an enchanted diaper. It was really obvious, once she thought about it for a moment, there was one pony who was the stand-out choice. She had to go to Rarity's!

Who else in Ponyville would know more about clothing enchantments, after all? Making it to Carousel Boutique in time to get the diaper off and use the bathroom would be tricky, but they didn't call her the fastest flyer in Ponyville for nothing. Dashing back to her room, Rainbow dove to her closet, looking for something to wear over the diaper. Her gala dress would be a bit conspicuous, her Nightmare Night costume would be worse, in fact... Nothing Rainbow Dash owned as far as clothing went would be particularly subtle, seeing as she didn't really wear much clothing outside of special occasions and her wardrobe reflected that. Finally giving up on finding something good to wear, she just grabbed a blanket off her bed, tied it around her torso just beneath her wings, and sprinted for the door. She really had to pee, and Rarity's shop was pretty far away. This would be pushing it.

Judging by the positioning of the sun, either Celestia was working fast or it was well after lunchtime, so there was no chance of getting to Rarity's before anypony was out and about. Looking around from her doorway, Rainbow decided the coast was as clear as it was going to be. There weren't any weather ponies out and about, the mail was already in her mailbox, it looked like it was the best opportunity she would get. Spreading her wings, Rainbow took off in the direction of the boutique. Fortunately her flight wasn't hampered by the diaper nearly as much as her walking was; Her maneuverability was a little off from the awkward bulk between her legs, but all she had to do was fly in a straight line so there wasn't much of a problem. That is, until she swerved down to land. She hadn't really considered braking, wanting to get to Rarity's shop as quickly as possible, which was proving problematic. Normally, Rainbow Dash just do a flip in the air to slow down once she was outside the store, coming to a stylish and quick stop, but when she started her sharp turn around her legs got tangled in the blanket and she ended up overshooting and crashing into the door instead.

If she didn't have a headache before, Rainbow definitely did now. She groaned, closing her eyes and trying to ignore her aching forehead. "I guess that beats knocking," She quipped, glad to hear Rarity galloping to the door.

"Who is it?" The voice came from behind the door and Rainbow heard the shout, but it caught her by surprise. The voice was higher, and sounded pretty juvenile compared to Rarity's distinct sophisticated accent.

Her eyes went wide and she yanked the blanket over the diaper as she realized what she was hearing. "That's not Rarity, that's-"

"Hi, Rainbow Dash!" Sweetie Bell said, looking around suspiciously. "What are you... doing here?"

"I-" Rainbow Dash stammered, blushing a bit and double checking to make sure the blanket was covering everything up. "Um, I need to see Rarity, is she here?"

"Yeah, she's really busy though," the filly answered. "She doesn't want to see anypony right now, so you really shouldn't go near her work room, or-" Sweetie Bell finally seemed to notice something. "Um, Rainbow Dash, why are you wearing a blanket?"

Rainbow Dash's blush intensified a bit, and she looked down at her hooves. "Um, it's kinda private. I just need to see Rarity, okay?"

Sweetie Bell shook her head, distracted from her question for a moment. "Well she's really busy right now, so you shouldn't go near her work room!" She looked over her shoulder nervously, before looking back at Rainbow and adding, "So you'll just have to come back later sorry bye!" Then, without a chance for Rainbow Dash to respond, Sweetie Bell slammed the door in her face.

The pegasus spluttered for a second, trying to think of what she could do next. Even if she knew anypony else who could help her, she doubted she could make it in time to get the diaper off and make it to the bathroom, and there was no way she would ever use the stupid thing. Whoever thought this was funny was going to be in serious trouble once all this was over, but until then, Rainbow Dash had to think of some other Unicorn who might be able to help her before she lost any more of her dignity. But who else could-

"Sweetie Bell, who was at the door?" Rarity's voice was a little far away, but Rainbow Dash could still make things out pretty clearly.

"Um, nopony!" Sweetie Bell replied, quickly. Rainbow Dash's eyes went wide, and before Rarity could respond to her sister, Rainbow started pounding on the door with a hoof, knocking as quickly and loudly as she could. "Nopony at all!" Sweetie Bell repeated.

"Stop being silly, Sweetie Bell," Rarity replied, and Rainbow heard her trotting towards the door. "Who is it?"

The door opened again, and Rainbow grinned sheepishly. "Uh, hi Rarity," She said. "Sweetie Bell said you were busy."

"Oh, nonsense!" Rarity replied, "Come on in! I was just cleaning up from lunch. What can I help you with?"

"Um..." Rainbow Dash said, hurrying inside. "It's kind of embarrassing, but..."

Rarity nodded, eying the blanket Rainbow Dash was wearing. "Please, I understand," she said. "Of course I won't tell anypony if you tried your hoof at dressmaking. I must say, though, I thought even you knew more about fashion than-"

"That's not it!" Rainbow Dash said, looking around. "I kinda don't want to tell you in front of Sweetie B- Say, where'd she go?" After a survey of the room, she realized that the filly had already disappeared. "Er... Promise that you definitely won't tell anypony?"

"I promise," Rarity said, nodding. "Now what is it, Dear? You're making me curious!"

Rainbow Dash reached her muzzle towards the knot she had tied in the blanket, then paused. "Pinkie Pie promise?" She asked, wanting to be extra certain.

"Oh, I hardly think that is neede-" Rarity stopped, noticing Rainbow Dash's expression of something between anxiety and urgency. Doing the motions, she said, "Fine, if you insist. Cross my heart and hope to fly, stick a cupcake in my eye... Now what is it?"

Rainbow Dash blushed one last time, but she couldn't see any way to be any more safe, so she finally yanked at the knot, letting the blanket drop to the floor. "It won't come off!" She said, gesturing at the diaper. "I tried everything!"

Rarity was taken aback, but tried to take things in stride. "I see," She said, taking a second to think. "And, well, when exactly did you put it on?"

"I didn't!" Rainbow said, shaking her head. "I just woke up and it was there! Please, you gotta help me, I really need to use the bathroom and no matter what I do I can't take this thing off!"

"I... see," Rarity repeated. "I'll see what I can do, I suppose. This is really outside of my area of expertise, Dear, but I'll give it my best." Focusing, her horn began to glow, and a second later an identical glow appeared around the diaper. For a second, Rainbow Thought that it was going to come loose, but then the diaper just seemed to swell a bit, growing a tiny bit thicker and tightening around Rainbow Dash's waist. Her hind legs were bowed a little wider apart, but nothing else changed.

"S-stop!" Rainbow yelped, crossing her hind legs again. She felt like she was about to burst, and the elastic tightening around her waist only served to add pressure to her aching bladder. "That's making it worse!"

Rarity cut off the magic, shaking her head. "I'm sorry, Rainbow, but I don't know what else to do!" She apologized. "What did Twilight say?"

Rainbow Dash blinked. "Twilight?"

Nodding, Rarity tilted her head slightly. "You did ask Twilight, didn't you? She knows more about magic than anypony in Ponyville!"

Again, Rainbow Dash had to blink, barely thinking about Rarity's words as she focused on keeping from wetting her- The diaper. "Right, yeah. Twilight. Of course, she said, uh..."

"You didn't go to her at all, did you?" Rarity asked, to which Rainbow had to nod.

"I, um, wasn't thinking that straight and I'm kind of in a hurry," the pegasus responded. "Do you really think she can help?"

"I don't know anypony else better suited to the task," Rarity replied, nodding. "Now, let's get you something more stylish to cover up that silly diaper, and we'll get over there right away. I think I have just the thing in my workshop!"

"No time, I'll just wear the blanket," Rainbow Dash said, shaking her head. "I don't know if I'm gonna make it!"

"I insist," Rarity insisted, insistently. "Besides, that horrid blanket is so out of place you'll probably have everypony looking at you. I promise, the piece I'm working on is just the right thing!"

Rainbow considered it for half a second, before deciding Rarity was right. "Okay, but we've got to hurry!" She said, speeding past Rarity towards the stairs. Rarity was exasperated for a moment, but she decided it wasn't worth bringing up and hurried after her. Rainbow made it up the stairs and to the workshop in no time at all, even managing to stop without crashing before she threw the door open.

"Nooo!" Sweetie Bell shouted, turning to the door in a panic. "Rarity, I can explain, we thought that Cutie Mark Crusader Costume Creators would- Wait, Rainbow Dash?"

Rainbow Dash's eyes went wide as she surveyed the work room. Everything was in utter chaos. Fabric was tossed everywhere, dressforms were scattered and broken, and everything was covered in a gloss of pink glitter. In this case, 'everything' included all three members of the Cutie Mark Crusaders, who were hurriedly trying to get all the chaos cleaned up. That was, until Sweetie Bell said Rainbow's name, at which point the other two Crusaders immediately turned to see what was happening.

Scootaloo turned, grinning. "Rainbow Dash!" She said, excitedly. "What are you doing here?"

'No no no no no no,' Rainbow thought, frozen in panic. This was perhaps the worst possible scenario she could imagine, short of opening the door to find everypony in town there. The only silver lining was that she was so shocked, the need to use the bathroom practically vanished as see tried to figure out how to get away from these three without them noticing the diaper.

Standing there, frozen and slack-jawed, it didn't take the fillies long to see why Rainbow was acting strange. After a second of their own shocked silence, the three of them started giggling in unison.

"I... I..." Rainbow stammered, feeling a blush creeping into her cheeks again as she tried futiley to cover the diaper with her wings. The stupid thing felt uncomfortably warm, and she desperately hoped that they would drop the subject.

Sweetie Bell stopped laughing long enough to have a realization. "Oh! I bet that's why you were wearing a blanket eariler!" She said, snickering.

"Eh... You know the bathroom is down the hall, right?" Apple Bloom chimed in, giggling.

Scootaloo looked a little more distraught than the other two, but that didn't keep her from chiming in. "Did you have an accident?" She asked, sounding more curious than teasing.

"No!" Rainbow Dash said, quickly, taking a step back, looking around for Rarity. "Totally not, I wouldn't use this stupid thing!"

If anything, though, her answer only left Scootaloo more confused. "I mean, er, did you get hurt or something?" She clarified. "You already, uh, used it..."

"I- What?" Rainbow asked, looking between her legs at the diaper, and feeling a sudden rush of horror when she realized why she didn't need to use the bathroom anymore. The diaper was soaked and sagging a bit between her legs, and the yellowish tint made it entirely obvious to everypony that she recently had an accident. Even the decal of her cutie mark had faded. "No! NO!" She yelped. The thought that she hadn't even felt it when she went was a bit disturbing. Worse, though, these three had seen. "You gotta promise not to tell anyone!" She blurted. "Please!"

"Sure, okay," Apple Bloom agreed, sharing an amused glance with Sweetie Bell. They had all stopped laughing, finally, but the three of them were still very clearly amused. "But why didn't ya' just use the bathroom?"

"It's- It's a long story," Rainbow said. "Just... Don't tell anypony. Please."

Rarity finally caught up with Rainbow Dash, making it to the steps and quickly noticing the state of Rainbow Dash's diaper. "Oh dear," She said, in what Rainbow thought was the understatement of the year. "I'm sorry, I didn't- SWEETIE BELL!" She shrieked, recoiling as she saw what had happened to her work room. "What did you- How- But why didn't-"

Sweetie Bell gave her sister an innocent look, smiling up at her. "Sorry, Rarity, but I promise we'll have everything cleaned up right away!"

"You'll do no such thing!" Rarity insisted, recovering from the shock before somehow directing an apology at Rainbow Dash and glaring at the Cutie Mark Crusaders.  "I'm afraid I won't be able to go to the Library with you, I need to get this mess cleaned up. Do you think you can make it to the library by yourself?"

"Um... yeah," Rainbow Dash said, after thinking for a second. "But, uh, you said you had something for me to wear?"

"Right, yes," Rarity said. "It's... Somewhere in here."

"Ooh, ooh, is this it?" Sweetie Bell asked, hurrying across the room and picking up a sad looking garment that resembled a cape dipped in glitter glue.

Rarity made a rather unladylike noise and nodded. "That - was - it," she said, sighing. "I'll just go get you a dress, Rainbow," she said, before adding a warning to the Cutie Mark Crusaders. "And you three better not make things worse. I'll be right back to clean things up, don't you dare touch anything!"

It was a relief to be following Rarity back down the stairs, and as humiliating as the situation was, Rainbow Dash felt far better now that the urgency of the situation had been cut down. She still wanted to get the diaper off as quickly as possible, but she had time to go with Rarity to put on a dress.

Loitering in the back in case any other customers showed up, Rainbow waited for her friend to get something to wear. It didn't take Rarity long to return with a relatively plain - well, as plain as you could hope for with Rarity - blue dress.

"Thanks," Rainbow said, getting dressed up as quickly as she could. "Once I get Twilight to figure out what's up, do you want some help getting your work room cleaned up? It's the least I could do."

"Oh, that's fine," Rarity said, shaking her head. "I've got everything under control here. Good luck!" She smiled encouragingly, before remembering to add, "Do make sure not to get the dress dirty, please!"

"Sure," Rainbow agreed, feeling a bit better after the mortifying embarrassment a few minutes ago. Her diaper felt more awkward than ever as she took off out the door, the crinkling noises when she moved now accompanied by a squishy noise. She made a face, but tried to ignore it as she flew up above Ponyville, lining up towards Twilight's library and then speeding off straight towards it. It was barely two minutes away as the crow flies, and Rainbow Dash was way faster than a crow.

Flying as fast as she could, it was hardly twenty seconds before she was on Twilight's doorstep, knocking on the door repeatedly to be let in. "Twilight! Are you home?" She called, trying to peek in a window. "I need your help!" Even if her wet diaper was covered up, she didn't want anypony to see her out and about wearing a dress.

"Jeez, what's the hurry?" Twilight Sparkle called back, opening the door before, of course, the giggling started. "Rainbow Dash, what are you doing wearing a dress?"

Rainbow blushed, but hurried inside nonetheless. "It's kinda a long story," she said, for what felt like the millionth time that day. "Are you busy?"

"Extremely! I still have to triple check my weekly task checklist, and I'm almost fifteen minutes behind schedule! And would you look at the state of the library?" Twilight replied, waving a hoof around to display the pristine and well-organized state of the library before noticing Rainbow's skeptical look. "But, heh, I can make time. What do you need?"

"Um..." Rainbow Dash said, before deciding just to tell her. After all, Rarity, Sweetie Bell, Applebloom and Scootaloo already knew, and Twilight was trustworthy enough. "Just promise not to tell anypony, okay? I just need one of your egghead spells to fix this." She asked, grabbing the dress and yanking it off. Twilight looked a little annoyed at the comment about her spells, but once she saw the diaper her annoyance vanished.

After a few awkward moments went by, Rainbow Dash realized that she probably preferred the giggling to Twilight's reaction. The purple unicorn just stared for a few moments, and after a few moments of awkward silence she asked, "Um, I don't know any potty training spells, Rainbow, but I can probably find something if you need me to."

Rainbow blinked, before she realized what Twilight was insinuating. "What? No! I need you to use a spell or something to take this stupid diaper off!"

Twilight Sparkle rolled her eyes, her confusion giving way to amusement. "What, are your hooves not working?" She asked, as her horn started to glow. "Fine, I'll humor you."

Rainbow Dash momentarily panicked, quickly warning Twilight that this wouldn't work. "No! Don't use..." She trailed off, as the magic tugged the tapes free of the diaper, and it flopped to the floor. Rainbow grinned, exuberant. "Awesome, thank you! What kind of spell did you need? Was it some kind of awesome counter-curse magic thing?"

Twilight shook her head, sounding skeptical. "Uh, I used a levitation spell. A really easy one. Are you feeling okay, Rainbow?"

"I am now," Rainbow Dash replied, not wanting to question things too much. If the diaper was off, she was happy. "Uh, can I use your bathroom, though? I, uh, still have some business I need to take care of."

Giving Rainbow a confused look, Twilight nevertheless decided not to push things too much. Unlike certain pink friends of theirs, Rainbow Dash would usually explain everything eventually. "Sure," she said, as she levitated the used diaper to a trash can.

Rainbow Dash beamed, trotting across the room towards Twilight's bathroom. As she thought about it, compared to most issues they had around Ponyville this one had been relatively simple to get fixed. Only a few ponies had seen, and it had all been taken care of with fairly minimal effort. As embarrassing as it was, it could have been a lot worse.

Rainbow Dash stopped thinking that when she closed the bathroom door behind her and felt a sudden snap of magic around her hindquarters. Looking over her shoulder, she screamed again. Not only was another diaper taped in place around her waist, it was just as wet as the last one had been when Twilight took it off

"Aaaah!" She yelped, running out of the bathroom. She was beginning to feel a sharp tug in her gut that signaled she was done digesting last night's excessive portions of cake.

"Rainbow Dash? What is it now?" Twilight Sparkle asked, turning to address Rainbow before seeing her diaper. "How did you-"

"I don't know!" Rainbow said, exasperated and panicking. "I just closed the door and it was back! Try your spell again or something!"

Twilight was pretty confused by then, but Rainbow Dash was very clearly focused on fixing things right away and figuring out why later. "O-kay..." she said tentatively, focusing for a moment and once again untaping the diaper from around Rainbow Dash's waist. "I don't know if that will work, though, if it didn't the first time ar-" She stopped talking when she realized Rainbow was already gone, having sped into the bathroom the second the diaper was off.

"AAAAUGGHH!" Rainbow Dash's exasperated cry came from the bathroom as she came out again, her eyes wide and frantic. "It didn't work!" She was trying and failing to cross her hind legs, clearly struggling to hold it.

Twilight focused again, her horn glowing brighter. "Let me try a counter-spell. Don't worry, Rainbow Dash, I'm sure I can do something." she said, and after a moment the diaper entirely vanished from Rainbow Dash's flanks. She grinned for a second, but before either of them could so much as speak, there was a flash and the diaper was back, and Rainbow reacted like somepony had kicked her in the stomach, doubling over in midair and clutching her gut.

"Not helping!" she said, body tense as she landed to conserve energy and started trotting in place in a grown-up version of a filly's potty dance. "Come on, Twilight! This stupid prank already made me wet myself, I'm NOT gonna crap this diaper too! PLEASE!" She clasped her forehooves together in a pleading manner, looking to her friend for help.

"I- I don't know what to do!" Twilight said, running to a bookshelf and levitating a string of various tomes down, scanning through them at a breakneck pace. "I don't even know what kind of curse it is! Let's see... The Fiendish Filly Flu, no... A Costume Curse? No... Maybe it's a Mare's Malediction... Rainbow, have you been in contact with any rare magical pendants recently?"

"NO!" Rainbow yelled, trying to cross her legs and doing a poor job of it with the bulky padding keeping her hind legs spread. It was taking more effort to keep her diaper clean - If not dry - than it normally took clearing the skies for a week. "JUST DO SOMETHING!" She shouted, desperately.

"I don't know what to do!" Twilight said, urgently flipping through books quickly enough that the corners of the pages started to smoke.

"I don't care!" Rainbow replied, trying to grab the diaper and yank it off in a futile gesture. "Just do anything!"

"Um... Oh gosh, maybe..." Twilight stammered, until she finally saw something that looked right, A Counter-Clothes Curse mentioned in the Anthology of Anachronistic Alchemy. She quickly read it, trying to see what the effects were. "Invented by Starswirl the Bearded's nephew, strips a pony of his or her clothes and leaves them unable to get dressed for weeks. It was generally been laughed at for being useless, since ponies don't wear clothes... Perfect!"  As far as Rainbow Dash was concerned the side effects wouldn't be a big deal, and as long as it worked, it would get her out of that diaper in no time. Her horn began to glow, brighter and brighter as she followed the instructions, pointing the magic at Rainbow Dash. "Hold still, I have a plan!" She called, and finally let go of the spell.

The flash was incredibly bright, and for a second Twilight's couldn't see a thing. She heard a loud 'Crash', and after looking around and a whole lot of blinking she came to her senses. "Rainbow Dash? Rainbow Dash! Are you okay?" She said, the library coming into focus. She saw Rainbow Dash, standing behind Twilight's desk, very obviously hiding her hindquarters and looking like she was about to cry.

Making a choked sobbing noise, Rainbow managed to say, "I- I'm fine. Just, uh, stay back. Okay? The spell, uh, worked. Everything's cool." She sniffled, and didn't move from where she was standing.

Even if Twilight didn't have an ounce of common sense to figure out what had happened, she could smell the problem almost immediately. Wrinkling up her nose at the odor, she said, "It's okay, Rainbow Dash. We'll find a spell that works and get you cleaned up."

"What do you m-mean 'Get me cleaned up'?" Rainbow Dash asked, feebly protesting. "I'm fine! The spell worked! I d-didn't use the diaper, okay? Just, um, go back to your checklist thing or whatever." The lie was so bad that Twilight briefly wondered if Rainbow was the Element of Honesty and not Applejack, but the pegasus was clearly feeling sensitive, so Twilight knew she had to tread lightly.

"It's fine," Twilight said, levitating a clothespin from her desk and pinning it to her nose to deal with the assault on her sense of smell. "I promise I won't laugh or tease you or anything. It was the curse, you couldn't have done anything, just let me help you and I'm sure we'll get you back to normal in no time."

Rainbow sniffled again, but looked like she was starting to calm down a bit. "J-just don't tell anypony, okay? Rarity and the Cutie Mark Crusaders already know I was wearing a diaper, b-but I don't want anypony to find out that, um... y'know, I, uh..." She couldn't actually say out loud that she had made a mess in the diaper, but it was good enough.

"I promise," Twilight assured her. "Now let's get to studying, I'm sure I've got the cure in here somewhere." A pause went by, then she added, "Uh, do you want a clothespin?"

"Yes, please..." Rainbow said, wiping her eyes and finally coming out from behind the desk. "This thing kinda stinks..." It was obvious from even the most cursory of glances that the diaper was full, to the point that Twilight was surprised it hadn't leaked. Rainbow's trot was particularly awkward as she tried to walk without making the diaper's contents squish against her flanks. Twilight almost suspected that the curse had affected how badly Rainbow Dash had to go, since the diaper looked less like Rainbow had an accident and more like she'd been wearing it for a few days. "Thank you for not laughing, Twi," she added, smiling with an embarrassed but grateful expression.

"Of course," Twilight reassured her, looking through her desk for another clothespin. "What kind of friend would I be if I made fun of you over something you couldn't control?" It wouldn't help the situation any if Rainbow was hiding behind the desk while Twilight did all the studying, after all.

"Hah hahha!" A loud laugh echoed down the steps. Looking at the source, Twilight saw Spike, laughing so hard he could barely keep from falling over. "R-rainbow Dash, wh-why are you wearing a totally gross diaper?" He asked, stumbling over his words between giggles. "I kn-know you're lazy but gosh, getting to the bathroom's pretty easy!"

"Spike!" Twilight scolded, as Rainbow retreated behind the desk again, hanging her head in embarrassment and retracting her wings in an impression of Fluttershy when she was frightened. Spike had the common sense to stop laughing, though he still looked pretty amused by the situation.

"N-no, he's right," Rainbow said, moping again. "I'm a laughingstock! Nopony is ever going to take me seriously again!"

"That's not true!" Twilight said. "Nopony has to know, and even if they do, it wasn't your fault, it's whatever curse got put on you. We can figure out a way to get you out of that diaper, and it'll all be okay."

"Sure, as soon as I move to a new town and change my name," Rainbow insisted. "If anypony in Ponyville even gets a hint of this-"

"They won't!" Twilight assured her. "And Spike!" Her dragon assistant winced at the way she said his name.

"Y-yes, Twilight?" He asked, cautiously.

Twilight smiled a bit, feeling that she was finally getting things under control. "Since you think this whole thing is so funny, you get to help with the studying. And I better not hear any complaining!"

Spike reluctantly agreed, nodding and saying, "Okay..."

"Good!" Twilight smiled, turning back to the desk and producing a clothespin, levitating it over to Rainbow Dash and clipping it to her nose. It stayed put for all of a half second before there was a small pop of magic and it fell off, clattering to the floor. Twilight was confused, levitating it back in place and once again clipping it over Rainbow Dash's nose. Again, it fell off.

"Wh-why won't it stay on?" Rainbow Dash asked, confused. "Is that part of the curse, too?"

"I don't know," Twilight said, inspecting the clothespin. "I'd say that the spell I used on you worked and it's keeping you from wearing the pin, but then you would have been able to take off the diaper. This doesn't make any sense!"

"Please don't tell me I have to smell the stupid thing until we find the right spell," Rainbow Dash said, sounding a little more annoyed than embarrassed at that prospect. "It's bad enough I can't sit down."

"Why can't you sit down?" Twilight asked, momentarily confused.

Rainbow Dash rolled her eyes. "Uh, hello? Would you want to sit down in a pile of crap taped to your hindquarters?"

"Right..." Twilight realized, embarrassed for not having thought of that herself. "So, let's get to studying. I'm sure this will take no time at all!"

...

Some Time Later

"We aren't getting ANYWHERE!" Rainbow Dash complained as she slid over her fifth book, flipping through it for spells. Spike had read a few more than Rainbow and had no luck either, and Twilight had gotten through half her inventory on rare curses and turned up nothing. "We've been at this all day! The sun's about to go down, and I'm exhausted! Tell me you have something!" She was almost used to the smell by then, but her legs were starting to hurt from standing in place for so long, and any time she so much as thought about sitting down, her gross diaper would squish up against her flanks and remind her why that was a bad idea. After a few hours of studying she had needed to pee, and since she didn't think anypony would notice, she had just used her diaper again. That had been a bad idea, and the overfull diaper had finally leaked, leaving a puddle of urine on the library floor, Rainbow feeling gross, and Twilight hyperventilating when a couple books were almost ruined.

"No," Twilight admitted, looking up. "But I think I have an idea! I was just reading through this theory book on Complicated Clothing Curses, and apparently curses like these usually have some way for the victim to get out of it. A weak point, if you will. I think I know how you can get out of that diaper."

"Really? How?" Rainbow said, an edge of excitement in her voice. Her flanks were starting to itch, and she couldn't wait to just take a nice, long shower back home.

"From what I've observed," Twilight explained, "The diaper only re-appeared when you left the room. Plus, I checked the trash can and all of the diapers I took you out of were still there. That means that each time they re-appeard, it was a new diaper! Don't you see?"

Rainbow tilted her head, confused. "Uh... No? If you keep trying to take this diaper off you'll have to take out the trash?"

"What? No!" Twilight said, trying to explain her idea. "I think, if I change you into a new diaper, then the curse shouldn't put the old one back on because you'll already be in  a diaper. Then, you can just take off the new one since it won't be cursed, and you'll be fine!"

"Great!" Rainbow Dash said, before pausing. "Um... Where are you going to get a diaper in my size, exactly?"

That made Twilight pause for a second, before she had an idea. "Spike, can you run an errand for me?" She asked. "Go to Sugarcube corner, and ask Mr. or Mrs. Cake if you can borrow a diaper. Tell them that I'm, uh, foalsitting," she added, in case the Cake's were curious. "And, um, better get a few wipes and some filly powder too. Then I can use my magic to make the diaper fit you!"

"Great," Rainbow Dash said, as Spike ran out the door. "But how come you can't just conjure a diaper up with your magic if you can make one bigger?"

"I..." Twilight said, considering the question. "Well, you see... That's... A really good point, actually. Give me a moment." Flipping through a book she had already read, she mouthed out instructions for a conjuration spell as she read it and then tried it in real life. With a small amount of magical flashiness, a large saddlebag appeared on her back. Looking through it, Twilight found diapers, filly wipes and powder, and even a mare-sized changing mat. The diapers even had Rainbow's cutie mark in the front, which Twilight hadn't even meant to do.

Pulling out the mat and laying it on the floor a short distance from the books, Twilight shrugged to Rainbow Dash. "Just, uh, lie down I guess. I'll try and get this done as quickly as I can, and then you can go home and get some rest. I know that this whole situation stinks , but I think we've just about got things under control."

"Finally!" Rainbow Dash said, gladly lying down on the changing table before it finally hit her that Twilight was actually about to change her diaper. The situation was so surreal she almost wondered if she was dreaming, but if that was the case she would have woken up hours ago. "Um... Just get it over with, I guess?" she said.

"Of course," Twilight assured her, her horn glowing as she got started. Undoing the tapes, she was hit by the smell and recoiled, even with her clothespin firmly in place. Rainbow Dash had it worse, gagging a bit and trying to wave a wing in front of her nose to help. Levitating the diaper into the trash and then taking a couple wipes from the box, Twilight started getting her friend cleaned up, trying to be as quick as possible without doing a poor job.

A half dozen filly wipes later, Rainbow was clean, and both Twilight and her were blushing profusely at the awkward situation. "This isn't so bad, is it?" Twilight said, trying to distract from the matter at hand as she pulled over the filly powder, applying a little bit between Rainbow's legs. "Almost done, just... Oh no, that's too much," she said, grabbing another wipe and trying to move some of the filly powder more to Rainbow's flanks, and making things worse. Wielding both the tube of powder and a few filly wipes with her horn, she tried again. "No, now there's too litte... Now it's all uneven, but-"

"TWILIGHT!" Rainbow shouted. "It doesn't matter! Just tape on the other diaper so we get this over with!"

"Right," Twilight said, sheepishly setting down the filly powder. "Um, can you lift up your flanks for a second so I can get it under you?"

"Sure," Rainbow Dash said, complying. It only took a couple more seconds, and Twilight levitated the diaper in place and taped it on, a bit askew, but still snugly in place.

Twilight smiled. "Now that wasn't too bad! I can't wait to write the Princess and tell her everything we learned about trusting friends to help you through embarrassing situations!" Noting Rainbow Dash's look, she added, "I'll leave out the details." Then, glancing at the trash can, which was now totally full of Rainbow's old diapers, she added, "Remind me to ask Spike to take out the trash when he gets back..."

"Wait," Rainbow Dash added, glad that the situation was over with. "We've got one more, now that I can take this thing off." She beamed, grabbing the tapes of the new diaper with her hooves, and giving a yank.

They didn't budge.

Chapter Two: The Morning After

Rainbow Dash woke up with a groan, looking around to take in her surroundings. She had planned on flying home last night, but the dress Rarity had lent her wouldn't stay on no matter how much they tried. Every time they managed to get something in place covering up the diaper, it would slip off a second later. It didn't matter how secure it should have been, the dress just wouldn't stay in place. Twilight's no-clothes curse was becoming a huge pain in the butt,

So, instead, she had spent the night in the guest room, making sure the blinds were closed so nopony would have a chance at seeing inside. It hadn't been as comfortable as her bed at home, but no mattress could ever match a cloud.

To make the morning more of a nuisance, Rainbow Dash once again had urgent need of the bathroom. She could always get changed by Twilight, but that didn't mean Rainbow Dash was looking forward to any more wet diapers. On the other hoof, though, there was no use trying to delay the inevitable. Twilight had said they would be doing research today, and they both needed lots of rest to give it their full attention. If Rainbow was going to have to use the diaper, she might as well use it straight away and get it over with.

So, suckling her pacifier, Rainbow Dash rolled out of bed and got to her hooves. Telling herself it was okay to intentionally have an accident, she-

Pacifier? Rainbow Dash crossed her eyes, finally noticing the pacifier she was suckling on. She had been suckling the thing at least since she woke up, and a little drool was trickling down her chin. "Ew!" She mumbled, wiping her face off with a hoof and trying to spit out the pacifier. Even when she grabbed it with a hoof to pull it out, though, it stayed firmly in place.

"Twawa!" She yelled, lisping. The pacifier made it difficult to speak at all, since her mouth kept wanting to suckle on it even when she tried to yell. Worse, even after she managed to form words, she couldn't get them to sound right. Her voice lisping like a filly still learning to speak, she called, "Twiwy! Hewp! Daw's a pathaf- Patha- pash... Mmm!" Her speech devolved into mumbles as she resumed suckling the pacifier, each word taking more effort than the last. She stopped calling for a second and ran to the guest bathroom to get a look in the mirror. The mouthguard, like the diaper, had Rainbow's cutie mark drawn on it, and the rest of it was a pale blue matching her coat. Freaking fan-tastic.

Focusing again on pronouncing her words with as much clarity as possible, she shouted once more for help. "TWI-WIGHT!" She yelled.

After a few painfully long seconds, Rainbow Dash finally heard hoofsteps coming downstairs. She ran to the door to get to Twilight as fast as possible, hurrying into the library itself. Instead of Twilight, though, she saw Pinkie Pie coming down the stairs, humming a tune and wearing a wide smile. Her eyes went wide and she turned to run back into her room, but it was too late.

"Hiya Dashie!" Pinkie Pie said, grinning even more at the sight of her friend, seeming oblivious to Rainbow's diaper and pacifier. "What're you up to?"

Rainbow was so surprised at Pinkie's lack of reaction that she froze in her tracks, turning to give her a puzzled look. "P'nka Pa?" She asked, even more surprised when she saw Twilight walking down the stairs behind Pinkie.

"Good morning, Rainbow Dash!" Twilight said. "Don't worry about Pinkie Pie, she knows what happened."

"'Ou TOWD ha'?" Rainbow lisped, incredulous. She hadn't wanted anypony to find out, that's why she had bothered to spend the night instead of flying home to sleep in her own house. What was Twilight thinking?

"I'm sorry, but I needed her help to-" Twilight seemed to finally notice the elephant in the room. "Uh, Rainbow, when did you get the pacifier?"

"Ooh! Ooh! I know this one!" Pinkie Pie said, waving a hoof in the air like a schoolfilly wanting to answer a question. "You were sucking on it when you woke up and you couldn't spit it out, right?"

"Uh, yeaw..." Rainbow said. "Hah- Mm, How da... How. Did. You. Know?" She asked, taking a couple seconds with each word to say it right.

Rolling her eyes, Pinkie said, "Well, duh! It's not like you're gonna go out and buy one, so I figured it's just like the diaper thing! I betcha Twilight could take it out with her magic in a jiffy!"

Rainbow looked to Twilight for an explanation, and the unicorn cleared her throat. "I needed a research assistant today," she explained, "So I thought Pinkie Pie could help. I know she's a little... Pinkie Pie, but she still remembers how all my equipment works from when I tried to figure out how her Pinkie sense works. We weren't getting anywhere looking through my spellbooks, after all. I thought some modern scientific research might be a little more effective."

Rainbow Dash cleared her throat, unimpressed. It was all egghead stuff, one way or another. Gesturing towards her mouth with a hoof, Twilight remembered why Rainbow had been calling for her in the first place. "Um, here, let me get that for you..." She said, her horn starting to glow. A second later the pacifier tumbled out of Rainbow Dash's mouth, floating to the table and landing with a little magical glow. "We'll have to figure out how to deal with that, too," she said, making a mental note. "Are you hungry? Spike made hay bacon before he went to Rarity's. Apparently, there was a 'Glitter emergency' and she needed help catching up on some work."

Rainbow Dash moved her jaw a bit, relieved to be free of the pacifier. Even so, though, she felt a tiny urge to pop it back in her mouth. It wasn't that she like the idea of suckling the pacifier, that was SO uncool, but without it her mouth felt parched and dry. "Uh, yeah," she said, agreeing to breakfast after a second. She was pretty hungry, after all, she hadn't had much to eat yesterday except a snack for dinner while they were reading. Still, there was one other problem..."Twilight, uh, I kinda need to pee," she said, blushing. "Could you, er... Change my diaper before we eat?" She looked down at her hooves and blushed, thankful that Pinkie Pie didn't laugh.

"Well, actually..." Twilight said, a bit sheepish, "If we want to get this figured out, I'm going to need you to... Well, to use your diapers while we've got you under observation so we can figure out how the curse works. Can you hold it for a little bit?"

"I guess so," Rainbow Dash said, crossing her legs. "As long as breakfast doesn't take too long..."

"Great!" Twilight said, obviously excited at the prospect of the scientific research ahead of them. Her horn glowed as she levitated in the hash browns and a pitcher of milk, along with plates and glasses to go with the food. Setting everything on a table, she pulled out a few chairs for Rainbow and Pinkie Pie to sit down.

"Ooh, my favorite!" Pinkie declared, sitting down at her plate and digging in, displaying the table manners you'd expect from an unruly filly. Rainbow and Twilight exchanged a glance, but didn't comment.

Sitting down with her legs crossed, Rainbow Dash picked up her fork and tried to take a bite. Just as she was about to put the food in her mouth, though, the hay bacon tumbled off the fork and landed back on her plate. Frowning, Rainbow tried again, with no more success. Reaching to take a drink of milk, then, the glass slipped from her hooves just as she was taking a drink, spilling milk all over the table and Rainbow herself. This caught Twilight's attention, and within moments she had a towel levitated over and was cleaning up the mess. Rainbow was a little unsettled, if the curse wouldn't let her eat or drink, she'd have bigger problems than diaper changes soon. She wasn't about to cry over spilled milk, but the thought of starving was a little scary.

"Rainbow Dash," Twilight scolded, wiping up the table and picking the glass up off the floor. "I know you're in a hurry to eat, but even you shouldn't be acting this clumsy."

"It's not me!" Rainbow insisted, shaking her head. "Every time I try and take a bite, the food just goes away! Now this stupid curse is gonna make me starve to death!"

Pinkie Pie looked up from her food to grab a napkin, her plate already clean. "Don't be silly, Dashie! You won't starve!" she said.

"I'm not being silly!" Rainbow Dash said, getting exasperated.

Twilight agreed with Rainbow, giving Pinkie Pie a confused look. "She's right, Pinkie. If the curse really keeps her from eating anything, she will starve." Looking back at Rainbow, she carefully added, "But it won't come to that, we'll figure out a counterspell before then."

"No no no!" Pinkie insisted, shaking her head as though it were obvious. "I betcha the curse just doesn't let her eat grown-up pony food, duh!"

"What?" Rainbow Dash said, running over the idea. It made sense, judging by how everything else had been going for her, but she still hoped it wasn't true. "Twilight, please tell me Pinkie's wrong here..."

Twilight considered it for a moment and shook her head. "It makes sense," she said. "I mean, we'll have to try it, but it makes more sense than the curse just making you go hungry. I think whoever did this just wanted to embarrass you, or else they wouldn't make it possible to change you or anything. Pinkie, could you run to Sugarcube Corner and borrow a bottle and some filly food from Mrs. Cake? Make sure not to tell her about the curse, okay?"

"Okay!" Pinkie Pie said, hopping to her hooves and galloping off without so much as a goodbye.

Like last night, Rainbow Dash had to protest. "How come you can't just magic those here, too?" she asked, as Pinkie Pie bolted out the door.

"I... could," Twilight admitted. "But I thought you might want to get your diaper changed with a little more privacy. I do need Pinkie's help with some experiments, but changing a wet diaper isn't something that requires a lab assistant. I can get all the notes I need for now without her help."

"Oh," Rainbow Dash said, having not considered that. She thought Pinkie Pie was a great friend, but it was awkward enough with just one friend having to clean her up, without an audience. "Thanks."

Twilight nodded, levitating over her diaper bag and laying the supplies out on the floor, along with a notebook. "Now, there are a few things I would like to try here, to figure out exactly how this curse works," she said. Hovering the notebook in front of her face, she produced a quill from somewhere and continued. "Please lie down on the changing pad. Now, on a scale of one to ten, precisely how bad do you need to use the bathroom?"

Rainbow sat down on the changing pad, lying back. "Uh, seven I guess," she said.

Twilight nodded, making a note. "Could you please specify, this is how badly you need to pee?"

"Uh, yeah," Rainbow said. "Can we just get this over with already?"

Shaking her head, Twilight said, "Not if you want to get this figured out. I need as much data as I can get to decipher how this curse works. Now, you said that was how much you had to pee. Do you need to go number two as well?"

"No," Rainbow said. "I don't get it. How will knowing how bad I gotta to pee help you cast a counter-spell?"

"Everything helps," Twilight insisted, as she started casting another spell. A magical glow appeared around Rainbow's diaper, as though Twilight were trying to remove it. Just like when Rarity tried that, though, Rainbow just felt her need to use the diaper grow. Twilight made another note. "Interesting... Now, again, how badly do you need to use the bathroom? Be as specific as you can."

"Uh, eight or nine," Rainbow said, struggling to keep her diaper dry for the sake of Twilight's experiment. "Can I please go? This is super uncomfortable."

"Just a moment," Twilight said, her horn glowing again as she repeated the last spell. Rainbow Dash whimpered from discomfort, and lost the fight with her bladder. She flooded the diaper, soaking it full. It was less humiliating than last time, since Twilight already knew what was about to happen. Rainbow was more embarrassed at how good it felt to stop holding it and go than she was at actually using the diaper.

Twilight noted this with clinical professionalism. "This is extremely interesting," she said, making more notes. "So, it's possible to induce accidents by trying to remove your diaper. I can see that used to induce embarrassing situations if anypony was aware of the situation," she commented. "Really, Rainbow Dash, all signs are pointing to this being some kind of prank."

"A prank?" Rainbow asked, sounding a little angry. Sitting up, she said, "In what universe is this funny? Who would possibly think this was a good prank?"

"Calm down, Rainbow," Twilight chided. "Now, would you please lie down again so I can get you changed?"

Rainbow Dash frowned but complied, lying back down and groaning. "This is so stupid!"

"Rainbow, I'm trying to help you," Twilight reminded her with a sigh. "Please stop complaining, okay?"

"Fine," Rainbow Dash said, lying back and sighing. Rainbow didn't know why Twilight was complaining, she wasn't the one who was stuck wearing a wet diaper.

Twilight waited for a moment to make sure that Rainbow Dash had stopped making a fuss, and then got to work. It hadn't gotten any less awkward cleaning up Rainbow's privates, but Twilight at least got the job done more quickly this time. Untaping Rainbow's old diaper and throwing it in the trash, Twilight wiped Rainbow up in a few seconds. Sliding a fresh diaper in place beneath her butt, tucking her tail through the small hole in the seat of the diaper. Folding it over Dash, made sure it was in place but didn't secure the tapes. For some reason, now that she was dry, Rainbow Dash's flanks felt a little uncomfortable. Just like the pacifier, she didn't like wearing the wet diaper, but now that it was gone her hindquarters felt uncomfortable. It was a sort of pins-and-needles feeling, like she had sat too long and her butt had fallen asleep.

Twilight's horn stopped glowing, and she took a step back. "I'm going to leave the room for a second," she explained. "I want to see if your diaper will change back to being wet everything in place but the tapes undone."

"Okay..." Rainbow Dash said, sitting up and rubbing the seat of her diaper with her forehooves, trying to deal with the discomfort. She wasn't sure which was worse, the embarrassment of wearing a wet diaper or the discomfort of the dry one.

"Now, to be clear," Twilight added, raising her notebook and quill once again. "You currently don't need to use your diaper at all, right?"

"Yeah, right," Rainbow agreed. "Uh, Twilight?" She asked, deciding she should tell her about the newfound discomfort.

"Yes?" Twilight asked, jotting down a couple notes and setting aside her quill.

"Uh, my butt feels weird," Rainbow said, her cheeks turning red as she blushed again. "After you changed the diaper it started to feel kind of numb, I guess."

"Hmm..." Twilight said, making another note. "That's strange. And you haven't felt anything like this until now?"

"No," Rainbow Dash confirmed, before thinking to add, "Well... After you took out the Pacifier my mouth's been kind of dry, but that's about it. I figured I was just thirsty or something."

Jotting down one more note, Twilight said, "That is odd. I'm sure we'll get it all sorted out once we figure out how the rest of this curse works, though," She promised. "Just wait here, okay? I'm just going to walk to the other room and come right back."

"Yeah, yeah." Rainbow rolled her eyes and sitting cross-legged as she waited on Twilight.

Twilight walked towards the closest available room, the kitchen, closing the door behind her. The second that she shut the door, Rainbow felt the tapes snap into place on the diaper. The padding grew soggy and warm, the pins-and-needles experience went away, and she felt a minor pressure on her bowels that she knew she hadn't felt a moment ago. As a small bonus, the dry-mouth sensation disappeared too. Rainbow realized after a second, though, that it was gone because the pacifier had reappeared between her lips. Overall she felt far more comfortable, to her annoyance.

Opening the door and trotting back in, Twilight quickly noticed the pacifier. "I didn't see that coming," she said, noting it down. "Is your diaper still dry?"

Rainbow shook her head, and Twilight remembered to remove the pacifier for her. "Thanks," Rainbow said, though her mouth felt dry again almost immediately. "So, can you actually change me now?"

"First, I have one more thing I want to try," Twilight said. "Okay?"

"Fine..." Rainbow said, snorting in annoyance as she lay back on the mat.

Twilight retrieved her notebook and quill. "Now, do you need to use your diaper any more than you did before I left?"

"A little," Rainbow admitted. "It's not that bad, though."

Making a note of this, Twilight set down her notebook and repeated the changing process from earlier. She had gotten faster than ever, and in ten seconds flat  she had Rainbow Dash wiped, powdered, and diapered. She only did one tape on each side of the diaper, though, leaving two tapes total undone. The numbness returned, worse than ever, and when Rainbow sat up she tugged at the back of the diaper to try and make it feel a little better.

Twilight smiled at a job well done and said, "Okay, now I'll just-"

"Walk to the other room, yeah, yeah," Rainbow Dash rolled her eyes. Twilight sighed, walking back to the kitchen.

Same as before, the last two tapes snapped in place, Dash's diaper grew soggy, and the pacifier returned to her mouth. Again, other than a slight feeling of dampness, her flanks no longer felt numb, and her mouth no longer felt dry. There was a definite need to mess her diaper by then, but she still felt like she could hold it for a while.

Twilight came back in, and went down the checklist. She took out Rainbow's pacifier, checked if she was wet, and asked how badly she needed to go.

"This is all starting to make sense," Twilight said, as she jotted down the last of her notes. "Do you, well, want to use your diaper again before I change you?" she asked.

"Well..." Rainbow Dash blushed as she thought about it, but considering that Twilight already knew, it was the best option. "Could I, uh, not get changed right away?"

"What?" Twilight asked, surprised. "Why not?"

"Well, it just feels super weird when it's not wet," Rainbow explained, adding quickly, "Because of the curse. Being a little wet is fine next to feeling all numb and stuff."

Considering it, Twilight nodded. "I suppose that's okay," she said. "But not for too long. I don't know how soon we can find a counterspell, and I don't think you want diaper rash."

Rainbow Dash agreed, glad that Twilight wasn't making a big deal out of this. "Thanks," she said, getting back to her hooves. "So... Now what?"

"I guess... We wait on Pinkie Pie," Twilight said. "I don't want to start any more experiments without her, and anyways I bet you're feeling pretty hungry by now."

Rainbow's stomach grumbled, and she nodded. "Yeah... I really hope that her plan works. Any idea how long she'll be?"

Twilight shrugged, sitting back down at the table and looking over her notes. "Knowing Pinkie Pie, she'll probably show up as soon as we finish talking."

"Finish talking about what?" Pinkie Pie asked, hopping through the door. She stopped in her tracks upon coming inside, looking surprised. Leaning to Twilight and talking in a painfully obvious stage whisper, she said, "Uh, Twilight! I think Ainbow-ray Ash-day had an accident-way in her iaper-day!"

"I know pig-latin, Pinkie," Rainbow Dash said, rolling her eyes.

"Shh, I'm talking in code!" Pinkie told Rainbow, turning back to Twilight.

Twilight smirked, telling Pinkie, "I know she's wet, Pinkie," she said. "The curse started making her feel weird when her diaper is dry, so she asked if we could wait to change her for a bit."

"Okey-dokey!" Pinkie Pie said, happily abandoning the subject without another word, pulling off her saddlebags. "I got a whole bunch of food for Dashie!"

"Great," Rainbow Dash said, her stomach grumbling loudly. "What did you get?"

"Uh..." Pinkie dug through the bag, pulling out a couple jars of filly food and a large bottle of formula. Reading one jar, she read aloud, "Strained... Carrots. Ew, gross!"

Rainbow couldn't help but agree with that sentiment, but if it was all she could eat it was better than nothing. Grabbing a spoon from the table and a jar from Pinkie's hoof, she unscrewed the lid, feeling a little anxious. Digging the spoon into the orange mush, she moved it towards her mouth to take a bite.

Pinkie was right, as it turned out, Rainbow was able to eat the filly food. Pinkie was also right about the filly food being gross. It tasted like overcooked veggies run through a blender before having all the flavor drained out. Still, it was food, and Rainbow Dash felt famished. She devoured the first jar in a few bites and after Pinkie handed her a second, Rainbow devoured that one too.  Choking down the last few bites, she then took the filly bottle, sticking the rubber nipple into her mouth and sucking at it. Without the pacifier in, she felt thirsty enough to drink the whole lake, but she settled with the painfully slow trickle of formula. Finally, with her hunger and thirst dealt with, she set down the bottle and wiped her mouth with a hoof. Smiling sheepishly at Twilight and Pinkie, she blushed. "Uh, I was hungry..."

Her table manners weren't something Rainbow Dash typically cared about, but under the circumstances she felt like she should give an explanation. "Thanks, Pinkie," she added, "Mrs. Cake just gave you some of Pound and Pumpkins food?"

"Yup!"  Pinkie Pie agreed, smiling and nodding. "And don't worry, I didn't tell her about the curse, I just told them you were feeling super hungry for filly food."

"What?" Rainbow Dash said, slack-jawed ans stunned for a moment as she tried to reply. "That's- That's even worse! You at least didn't tell her anything else, right?"

"Of course not," Pinkie reassured her. "She had to take an order!" Rainbow sighed in relief, glad to hear that nopony had heard about the rest of the curse.

Until Pinkie Pie continued, that is, and said, "I told Mr. Cake about the diapers while he packed everything up for me."

"WHAT?" Rainbow Dash asked again, jumping into the air in shock.

"Calm down, Rainbow," Twilight said, not wanting things to get out of hand. "I'm sure the Cakes won't say anything."

"It's okay, it's okay!" Pinkie Pie promised, to reassure her friend. "I didn't tell him anything about the curse, I just told him you were wearing diapers for fun!"

Rainbow stammered for a second, horrified. "I... You... You idiot! Now nopony is ever going to take me seriously ever again! What in the hay were you thinking?"

"Rainbow Dash!" Twilight said. "I know you're upset, but Pinkie Pie is your friend!"

"My friend? My friend!?" Rainbow Dash asked, incredulous. "What kind of friend blabs to everypony that I'm wearing a freaking diaper? She's such an airhead she didn't even think why this might be a problem! She's so stup-"

Rainbow's tirade was cut off as the pacifier flew from the table into her mouth. A little glow from Twilight's magic was briefly visible, but that faded quickly. Rainbow's rant lost all momentum, and after a second she landed and hung her head, trying to avoid Twilight's gaze. She was giving Rainbow Dash a death glare, and Rainbow sucked on the pacifier for a second before looking over at Pinkie Pie, who was near tears.

"Rainbow Dash, I'm disappointed with you!" Twilight said, angrily. "You know Pinkie Pie didn't mean to embarrass you! Apologize to her!" Her horn glowing, she removed the pacifier from Rainbow's mouth for a second before pointing at Pinkie Pie and waiting.

"I'm sorry, Pinkie Pie," Rainbow Dash said, feeling a little dejected. "I didn't mean to make you feel bad, I was just upset."

Pinkie Pie cheered up a bit, smiling at Rainbow. "It's okay," she finally said. "You didn't really mean any of it... Right?"

"Right," Rainbow Dash promised, nodding.

Twilight smiled to herself, and Rainbow suspected that she was looking forward to writing the princess to tell her what she learned about forgiveness and friendship. "Well then!" She announced, happy that the subject had been dealt with. "Let's get to the lab."

Chapter Three: For Science!

"I still don't see why you gotta do this," Rainbow Dash complained as Twilight tightened the clamp around her final hoof, leaving her suspended in the machine. Rainbow's legs were all held apart by metal clamps built into a metal ring about seven feet across, and her wings similarly bound. This left her doing an impression of the vitruvian pony, which Pinkie Pie helpfully pointed out. On her head a device shaped like a colander was held in place with a strap under her muzzle, with a dozen wires running from it. The wires were also stuck in place on various points around the diaper, Rainbow's torso, and her head, all running to a big machine in the corner of the room. Pulling tentatively at one of the clamps, Rainbow Dash found that her hoof was stuck firmly in place. "Can't you do the tests without locking me up like we're in a creepy horror movie?"

Twilight shrugged, rearranging a tangle of wires as she set up some kind of scanning device. "Can you stand perfectly still for twenty minutes while I run a scan?" She asked, before adding, "Pinkie, can you turn on the power?"

"Okey dokey!" Pinkie called from across the room, flipping a big switch which caused lights to turn on around the ring Rainbow was suspended in. Rainbow winced at the sudden light, making her blink a lot to keep her eyes from watering at the intensity.

"Uh, I guess not," she admitted, squirming and trying to get comfortable. It was difficult, though, with her limbs held apart and wet diaper sagging a little bit around her waist. She expected to be pretty stiff and sore by the end of this, though it was worth it to discover a counter-curse.

"Okay then," Twilight said, her horn glowing as she wired up the machine. Paper started spooling out with squiggly lines moving up and down measuring various frequencies and energies. "Can you say aaaah, please?"

"Aaaah!" Pinkie Pie said from across the room, still holding the switch in place. Twilight put a hoof to her forehead, sighing. "I meant Rainbow Dash," she explained. "You can let go of the switch now."

Rainbow obeyed next, opening her mouth to comply. "Aaa-mpph!" She said, as Twilight levitated the pacifier into her mouth, a long wire trailing from the end. "Wha'tha he''? She mumbled, glaring in annoyance and trying to spit it out.

Plugging in the wire trailing from the pacifier, Twilight said, "I need to get a reading on the pacifier too. Besides, the scan is going to take a while and you shouldn't talk or it'll mess up the readings."

"Can I talk?" Pinkie Pie asked, trotting up next to Twilight.

"Yes," Twilight agreed, "But keep an eye on the power readings while you do, okay?"

"Okey dokie!" Pinkie Pie hopped over to the machine, pressing the side of her face up against the little screen displaying the power readings to keep an eye on them.

Watching the squiggly lines the machine was making Twilight said to Rainbow Dash, "To get a reading on your brain activity, I'm going to keep talking to you. Don't answer any questions, just think about your answer, I just want to get a reading on your basic brain activity. Okay?"

"Yeth," Rainbow Dash replied, before mentally smacking herself. "Ah mean, uh..." Catching herself she stopped talking, suckling the pacifier to keep her mouth occupied. She had to admit, it felt pretty soothing. Not that she liked it, of course, but as long as it was in her mouth...

"Okay," Twilight said, "Something interesting we both can talk about... How about Daring Do?"

Rainbow Dash nodded. Twilight totally misunderstood who Daring's love interested should be, but otherwise she was as big a fan as Rainbow was.

Frowning, Twilight pointed out, "You can't shake your head either, Rainbow, you have to be still. I'm going to start it now, so don't move or make a sound, okay?"

'Then why did you ask my a question?' Rainbow Dash thought, but she didn't say it out loud.  She wanted to get this done as quickly as possible.

Minutes ticked by at an excruciatingly slow pace, first one, then five, then ten, as Twilight went on and on about the intricacies of the series. Rainbow Dash knew it all, of course, but she could handle a little recapping. It gave her something to listen to, at least, while she waited for the test to get done. She could hear machines whirring behind her and wanted to look to see what they were doing, maybe respond to some of Twilight's sillier fan theories, but she reminded herself to stay put. It was difficult, and getting more and more tedious as the seconds ticked by, but she could make it. Almost done. Just as the eighteen minute mark rolled around, though, a problem cropped up. "You've read the most recent one, right? Daring Do and the Unmasking of the Mysterious Mare?" Twilight asked.

Rainbow Dash nearly jolted out of the contraption, but she reminded herself to stay still. It was out? Her pre-order still hadn't come in! How did Twilight get it? Wait, but that meant Twilight was a book ahead of her... She must know who stole the Golden Horseshoe! Still, she wasn't about to spoil everything, right?

Not noticing Rainbow's anxiety, Twilight continued chattering. "I'm sure you loved it, the surprise near the end was incredible. I couldn't believe that-" Rainbow Dash gulped, telling herself to stay quiet for the scan to run. She could make it through one little spoiler. "And the reveal when you find out who stole the horseshoe..." She raised an eyebrow, looking at the readings. "Hmm, Pinkie, come look at this... I'm getting an unusually high level of anxiety for a base reading. You must be really stressed out about this curse," she commented to Rainbow Dash.

'No, but you're about to ruin the ending!' Rainbow thought, a little annoyed, but she didn't say a thing. Just one minute left, she could last that. Right?

"So, anyways, I'd be curious to hear what you thought of the Mysterious Mare's identity. You know, this book pretty much answers all the mysteries raised in the last six books!" Noting down the readings, she added, "Wow, your base stress levels are off the charts! Where was I?" Feeling sweat beading on her forehead, Rainbow Dash struggled to stay quiet. She hadn't spoiled anything yet...

"You were talking about all the mysteries," Pinkie Pie reminded, to Rainbow's annoyance.

"Right," Twilight said, nodding.  "Anyways, who ever would have guessed that the pony pulling the strings behind the Pegasus Conspiracy would have been-"

"I HAVN' WEAD IT!" Rainbow couldn't take it any more, she wasn't about to let the series get ruined, even if it meant starting the test all over again. Twilight looked from her test, surprised to hear the objection.

"What?" She asked, confused.

Since the test was ruined anyways, Rainbow Dash saw no reason not to clarify. (It was  a bit of a struggle to talk behind the pacifier, that didn't count as a reason.) "I neva' gotha book in da maiw, I haven' wead it yet. Don' spoiw anythin'!"

Twilight realized the issue and blushed slightly. "Oh, sorry," she said, a little sheepishly. "Why didn't you say so when I brought up the book?"

"Cauth I- Uh, pathifiaw?" Rainbow Dash pointed out. Twilight removed the spittle-soaked pacifier and, free to speak, Rainbow continued. "Because you said it'd mess up the test if I spoke!"

A pause went by, and Twilight giggled. "I only meant it'd mess it up while you were moving! Obviously if you were responding to everything I said it would be no good, but it wouldn't ruin twenty minutes of data if you had to scratch your nose for a second!"

"I can't scratch my nose," Rainbow pointed out, a little annoyed. "You could have been a little more clear!"

"Sorry," Twilight said, though she sounded more amused than sympathetic. "But I think that's a long enough sample for a base reading."

"Finally! So you can you let me out?" Rainbow asked, tugging her foreleg against the clamp.

"Not quite yet," Twilight said. "Pinkie Pie, can you handle the data while I do this next bit?"

"Of course," Pinkie Pie said, moving to take Twilight's position, as the unicorn moved in front of Rainbow Dash.

"Um... What are you doing?" Rainbow Dash asked, not happy about being ignored.

"Well," Twilight said, deciding how to phrase what she was about to say. "I have a base reading, but now I need to see how the curse reacts to magical influence, if you understand what I'm saying."

Rainbow didn't understand what Twilight was saying. "Uh... What?"

"Duh!" Pinkie Pie said, rolling her eyes. "Twilight's gonna use a bunch of magic on your diaper to make you have an accident, so she can see what the machines say about it."

"Oh," Rainbow Dash said, nodding. Pinkie Pie had a helpful way of boiling things down to the most basic so anypony, even non-eggheads, could understand them. "Wait, what?"

"I'll change you right away," Twilight promised. "But I need to see what the machine says about the curse, and the only way to find that out is to get a reaction from you."

"You're kidding, right? Hey!" Rainbow protested, as she saw Twilight's horn start to glow.

"Do you want to find a counterspell?" Twilight asked, struggling to get an appropriate spell ready.

"Yes," Rainbow Dash said automatically, before thinking to add, "But I don't wanna have any more accidents to do it!"

Twilight shook her head. "Sorry," she said, and before Rainbow could protest any more she saw a magical glow form around her squishy diaper, and after a second the padding vanished.

It re-appeared, of course, and Rainbow Dash felt a tug on her bowels when it did. The need to go was upgraded from minor to extreme, though even without being able to cross her legs she was able to hold it. "Okay," she said, trying not to sound like she was panicking. "That's all you need, right? You can fix the curse now and I can use the bathroom?"

"No, Rainbow," Twilight said, her tone a little patronizing. "Even if I had all the data I needed, I wouldn't have the counterspell right away, that takes time. Now, hold still!" Pointing her horn at Rainbow, she started preparing another spell.

"Twilight," Rainbow Dash said, a little concerned, but the unicorn ignored her as her horn began to glow. "Twilight." She said again, more urgently, but there was still no response. There had to be something else they could try! "Twilight!"

Struggling to maintain the spell while she responded, Twilight said, "I can't figure out a counterspell if we don't do this. Hold still."

Rainbow Dash frowned, but wasn't sure what she could say. Being forced to mess herself was pretty crappy, but if it could get her out of diapers for good, it was probably worth it. As Twilight's horn glowed brighter and brighter, though, and Pinkie Pie retrieved a clothespin for her and Twilight's nose, Rainbow's self preservation started to kick in. "Wait-" She started to say, tugging at the clamps holding her hooves in a feeble escape attempt, but Twilight's magic was ready. For a moment her diaper glowed, but then it was vaporized into ash in  a surprisingly violent display of magic. Before Rainbow could blink, though, it had re-appeared once again, of course. At the very least, though, for one magical second her flanks had been diaper free.

When the padding re-appeared the inevitable happened, as Rainbow felt a new intensity in her gut that no amount of struggling would help. Her hind legs trembled for a second while she tried to hold it, but it was futile. Blushing profusely, Rainbow felt her tail hike up as her body decided it was time to go, filling the seat of the diaper with manure. Twilight averted her gaze, at least, and Pinkie Pie barely seemed to notice, but that didn't help particularly much with the embarrassment. Twenty or thirty seconds went by in near silence, the only noise being a slight crinkle of the diaper as the expanding mess forced the diaper's plastic back outward. By the time she was done, the diaper was sagging nearly below her knees and the tapes were straining to keep it from falling off entirely.

Even Pinkie Pie was a little taken aback, her tail twitching as she said, "Eeeew!" Sticking out her tongue and screwing up her face, she waved a hoof in front of her nose to help with the smell more than the clothespin would.

"Just... Please tell me you got everything you need," Rainbow Dash asked, feeling defeated. Sure, this had happened on purpose, but embarrassment aside the whole scenario was exhausting.

"Uh..." Twilight said, blinking. "Yeah. Yes, I got everything. Here, I'll let you out of there,  okay? Say when." She hit one button, releasing Rainbow's wings, and then reached for another to let out her hooves.

"Thanks, yes," Rainbow Dash said, feeling her wings free up and moving them a bit to get a little feeling to return. "Just let me out of here." Feeling her hind legs get released, though, she realized she wasn't flapping her wings and had nothing keeping her in the air. "No, wai-" She started, before her forelegs were released and she fell the couple feet to the ground. A second later, she landed on the seat of the diaper, yelping as she felt its contents squish against her plot.

As Rainbow Dash expected, it felt disgusting, turning an uncomfortable but contained mess into something smushed around her thighs and between her legs. What Rainbow Dash didn't expect was how good it would feel at the same time. It was obviously an effect of the curse, but squishing the contents of the diaper up between her hind legs sent a tingle of pleasure up her spine, making her blush harder than the actual messing had. She felt a sudden desire to squish the diaper some more with her hooves, but with Twilight and Pinkie there it would be rather awkward. Not wanting to explain why she was making the mess worse, she just chewed her lip and hoped they wouldn't notice what she had felt.

"Uh, Twilight?" Pinkie Pie asked, looking at the readings written in squiggly lines. With various dongles and wires still stuck all over Rainbow and the colander still strapped to her head, the machine was still picking up signals. "It's saying that Dashie's feeling all funny."

"Hmm?" Twilight asked, glancing over at the chart Pinkie Pie was gesturing to. "Funny how?"

"Right here," Pinkie Pie said, pointing to a long strip of paper with a spike near the end of the squiggle.

"Arousal? Uh, that's probably just an error. It doesn't give accurate readings if the subject's moving around a lot. Ignore that."

"Uh, hey, still need a change over here," Rainbow Dash said, trying to change the subject. as she got to her hooves, trying to stand as normally as possible and finding it rather difficult with a huge messy diaper weighing down her backside. "Please? This feels totally awful."

"Of course," Twilight said. "Pinkie Pie, would you mind taking all these data papers upstairs while I get her cleaned up?"

"Okey dokey!" Pinkie Pie agreed, nodding as she scooped up the reams of paper with all their zig zags of data. As she left, Rainbow Dash looked gratefully to Twilight.

"Thanks," the pegasus said, half-smiling. "It'd be really awkward to get cleaned up with her arou-"

"Rainbow Dash, I know the machine's results at the end weren't faulty," Twilight said, cutting off her friend.

"Uh... Oh," Rainbow said, blushing more than ever. "Yeah. That."

Twilight blushed herself, trying to pick the right words to prevent things from getting any more awkward than they already were. "Well... Rainbow, you're a great friend," she started, pausing for a second. "And I can understand why you might get excited when you know I'm going to be, uh, touching you soon. But I'm only doing it as a friend to help you with this curse, I just don't think of you that way, okay?"

Rainbow Dash blinked for a second, and then she burst out laughing. "Y-you thought I felt that way 'cause of you?" She giggled, putting a hoof to her mouth to stifle the laughter so the whole town wouldn't hear. "It was the diaper!"

"Oh," Twilight said, sounding relieved until she realized, "Wait, what?"

Catching herself, Rainbow clarified, "I think it's part of the curse, like when it makes my butt feel weird when my diaper's not wet. I wouldn't normally... Uh, why don't we just change the subject, okay?"

"Yes, please," Twilight said, blushing slightly less than she had a moment ago. "Uh, just lie down, okay?"

Dash complied, and Twilight summoned her changing supplies. Sliding a trash can over next to the changing pad, Twilight inhaled deeply in preparation for untaping the diaper. Holding her breath, cheeks puffed out slightly as she tried to keep from exhaling when she grabbed the tapes of the diaper with her magic, popping them open.

Rainbow Dash wrinkled up her nose as the odor hit her, no longer shielded by the padding. Twilight was a little better protected, not having to breathe in again for another twenty or thirty seconds at least. Putting a hoof to her nose and trying not to inhale anymore than she had to, Rainbow commented in nasal tones, "Hurry it up!"

Twilight didn't respond, her face turning purpler than ever as she held her breath. Quickly hefting the diaper, struggling a bit with its weight as she tossed it into the trash bin, the unicorn grabbed nearly a dozen foal wipes from the container. Wiping with them all in unison, her practice with coordinated magic coming in handy, she got her friend cleaned up in a matter of seconds before disposing of the wipes as well. Wheezing as she finally took a breath, the color returned to Twilight's face and she panted for a couple moments.

"You don't have to tell me to hurry," the unicorn commented, a little annoyed, as she levitated the tube of foal powder. More experienced than ever, she quickly applied the perfumed powder it in a perfect, precise layer. Raising Rainbow's legs with a hoof, she slid the diaper in place and taped it down, unfaded cutie mark colorfully emblazoned on the crotch in case anypony forgot who was wearing the diaper. The change was a little less awkward this time around, partly just because it had only taken a few moments, but mostly because it had started to feel a little more familiar.

"You're getting fast," Rainbow Dash commented. "I think you got me cleaned up in like ten second fl-"

"Whooooo's hungry?" Pinkie Pie called down the stairs. "I made lunch!" The smell of baked apples and fresh bread wafted down the stairs, making Rainbow wonder how Pinkie had managed to cook a whole meal that in the brief time she had been gone.

"That smells freaking awesome," Rainbow said, grinning as she got to her hooves.

"Sorry," Twilight said, a little apologetically.

"Why? I- Oh, darn it," Rainbow Dash realized she wouldn't get to taste any of it as long as the curse was in play. Flapping her wings to get up to the door, she groaned. "What's for me, Pinkie? Strained puke?"

"Nope!" Pinkie Pie said, happily. "I made something for you, too. Little foals can eat applesauce, right? I whipped up a little bitty bit."

Confused, Twilight said, "But how? I didn't have any apple-"

"Plus, since storebought formula doesn't taste yummy, like, at all, I mixed up a special batch." She beamed, hopping back towards the kitchen.

Now Rainbow was confused. "How did she know the storebought formula is gro-"

"Doesn't matter! It's gonna get cold!" Pinkie Pie called.

One lunch, one short break while Rainbow stretched the stiffness out of her legs and wings, and one incredibly boring afternoon of Twilight muttering over squiggly lines on paper while Pinkie Pie and Rainbow helped as much as they could. Getting a chalk board, Twilight marked down long notes and long, mathematical equations Rainbow couldn't understand which apparently were some form of magical formula. (But not the magical formula Rainbow had to drink instead of water, Pinkie Pie helpfully pointed out.) It was nearly eleven, and while snacking on leftovers had kept them from getting hungry, they were all pretty tired when Twilight announced that there was nothing more to be learned from their experiments.

"So, what did you figure out?" Rainbow Dash asked, once Twilight finally looked up from her squiggles. "You know the counter-spell, right?"

Twilight sounded a little surprised, even shocked, when she said, "I... Don't know. I've never seen anything like this, Rainbow Dash. It's almost like dark magic, but the spell isn't set up properly for any kind of black curses. I'm sorry, but I really don't know what to do."

"What?" Rainbow asked, hopping to her hooves. "But... You... I can't wear diapers for the rest of my life!"

"You won't!" Twilight assured her. "We'll figure this out. This happened right after the Hearth's Warming Eve party, right? Tomorrow, we'll try tracing this from where it started. If anypony did this to you at the party, then I'm sure we'll be able to find somepony who saw something."

"I saw all sorts of things," Pinkie Pie pointed out, "But I don't know who used any voodooo on Rainbow Dash. You think anypony saw more at the party than me?" She seemed stricken at the idea, as though the idea of anypony at the party experiencing something she hadn't was horrifying to her.

"It's worth a shot," Rainbow said, but she didn't sound too sure about it.

"Don't worry," Twilight insisted. "We'll get this solved. Look here, there's at least a little bit of a clue on the ambient magic scale, it's off the charts. The spell looks like it's designed to piggyback energy off of your metabolism. When it has to fight off my magic, it draws the energy from your digestive system."

"So... That's why I gotta go really bad when you try and take the diaper off?" Rainbow asked, trying to put it in laymare's terms.

"Pretty much," Twilight agreed. "Now, I don't know if this will be helpful for a counterspell, but it's really interesting. Look here, at the magikinetic chart," She added, pointing.

Rainbow looked at the squiggle, seeing nothing more than a squiggle. All she was hearing was a bunch of unhelpful egghead babble which amounted to nothing helpful. "Right," she said. "Look, Twilight, I can't just keep wearing diapers forever! You have to be potty trained to get into the Wonderbolts! I checked!"

"When did you have time to check th-" Twilight started, but Rainbow pulled a Pinkie Pie and cut her off.

"That doesn't matter!" Rainbow Dash shouted. "You have to fix this!"

"I'm doing everything I can," Twilight promised. "But unless we can find out what caused this, I'm clueless!"

Pinkie Pie looked confused for a second. "No you're not, you're Twilight!" She said, rolling her eyes. "Clue Less is a private eye who lives down by Sugarcube Corner!"

Twilight blinked, then moved on. "Aaanyways... I know you want to get this worked out as quickly as possible, but I need to get some sleep, and I think you do too. Once we've had some time to rest, we'll figure this out."

Rainbow wanted to get this solved right away, but Twilight had a point. Rainbow was pretty sleepy, and they weren't getting anywhere. A little rest would do them good. "Fine..." She said, giving a sigh.

Twilight nodded, glad that Rainbow wasn't going to make a fuss. "Pinkie Pie," she said, turning to her friend. "Thank you for your help, I couldn't have done it without you."

"Yeah, thanks," Rainbow said, a little less enthused. She hadn't forgotten about Pinkie's slip of the tongue just yet, but she didn't want Twilight to shut her up with the pacifier again.

"No problem!" Pinkie said, happily. "Just let me know if you need anything else!"

"Of course," Twilight said, before turning back to Rainbow. "Do you need a change before we head to bed?"

Rainbow considered the question. The pressure in her gut told her that using her diaper and getting a change would be smart, but she wasn't about to crap herself on purpose twice in one day. Besides, she thought she could hold it all night, and if she couldn't she could always wake Twilight up for a change. "I'm good," she decided.

This was the wrong decision, because Rainbow had made a few miscalculations. She harshly miscalculated how long she could hold it, but that wasn't a problem by itself. Twilight wouldn't like it, but waking her up for a change wouldn't be too much of an issue.

What she didn't expect when she woke up late that night, her bowels cramping to let her know it was time to go, was the onesie. That was new.

Chapter Four

"What is it, Rainbow?" asked Twilight, fumbling around for the light switch. "I heard you scream.” She had bed-head which left her mane in a frazzled mess, but she seemed alert nonetheless.

"Aw wo'up an... Uh, Pathifia', pweath?" Rainbow requested, fed up with trying to talk while the pacifier was filling up her mouth, the annoying impulse to suckle it growing more frustrating than ever.

Twilight's horn began to glow, giving off a dim light so she could find the actual overhead light switch. "Just a moment," she said, finding the switch and flipping on the lights. Turning to Rainbow Dash, she prepared to take out the pacifier for her. "Now, what's the iss... issue... Oh."

Rainbow Dash nodded, looking a little exasperated and incredibly embarrassed as Twilight glanced over the newest addition to Rainbow's wardrobe. It looked quite like a typical, everyday onesie that a filly might wear, with short sleeves on her forelegs and the bottom wrapping around her diaper and buttoning in place between her legs. Obviously it was scaled up to Rainbow Dash's size, and the color was a darker blue that matched her coat while providing a little contrast. As a final touch, each side had a depiction of a rattle and a teddy bear, just in case it wasn't clear that the design was meant for an infant.

"This was starting to get annoying. It's not even a good prank!" Rainbow Dash complained, trotting in place.

Twilight sighed, shaking her head. Rainbow seemed pretty anxious, she clearly needed a little reassurance. "Don't worry. We'll get this fixed tomorrow. Right now, I just need to get some sleep." She yawned, emphasizing how tired she felt.

"Okay..." Rainbow agreed, pausing for a second before she added, blushing, "Uh... Could you give me a change before you get back to sleep?"

Twilight sighed, but tried not to look too annoyed. "Fine," she said, nodding. "Lie down, I'll get you cleaned up."

Rainbow Dash nodded, but then stopped before obeying. "I haven't, well, gone yet..." She explained. She felt cramped and needed to badly, but it was difficult to overcome her potty training and years of habit.

"Well, get it over with then," Twilight Sparkle recommended, yawning. She had been starting to dream when Rainbow woke her, and the unicorn was too tired to deal with this right now.

Again, Rainbow Dash nodded, stopping a moment later. "Can you turn around? I can't go if you're watching," she asked awkwardly.

Twilight groaned but did as Rainbow asked, spinning around and waiting. Rainbow Dash closed her eyes, concentrated, and pushed, but despite her best efforts she couldn't convince her body that it was okay to crap herself. A few painfully awkward moments went by, and she bit her lip. The cramping felt worse, but her diaper was still annoyingly clean.

"Well?" Twilight asked, after a moment.

"I'm, uh, having trouble..." admitted Rainbow Dash.

A second went by, and then Twilight had an idea. "Here," she said, her horn lighting up with an identical glow peeking out from behind the flap on the crotch of the onesie.

"Wh-what are you doing?" Rainbow asked nervously.

"You don't need a change, so if I try and take off your diaper, you'll need to go more badly," Twilight explained, taking a little of her concentration and making the glow of her horn dim a bit. "I'm just going to cast a quick teleportation spell on the diaper. Either it'll appear at the city dump or you'll have your accident and I can get you cleaned up." Focusing again, her horn began glowing bright once more.

Considering it, Rainbow Dash said, "Uh, okay..."

She wasn't sure she was a fan of that idea, but she couldn't see any problems with it other than the fact that it ended with her crapping herself, which she had been trying to do anyways. Standing there with her hind legs crossed, she was about to ask how long it would take when she felt her diaper disappear for a fraction of a second before returning back beneath the onesie. It wasn't the same, though: It felt far thicker than before, the extra bulk shoving Rainbow's hind legs apart and dropping her into a sitting position as she lost her hoofing. It felt as though there were two or three diapers taped up inside the onesie rather than just one, just going by the bulk. This wasn't a big deal, though, since she'd be changed soon anyways.

It took another brief moment before the rest of the spell's effects kicked in, and she felt a much stronger cramp, quickly losing the control she had been trying to rid herself of for the past couple minutes anyways. Her tail hiked up, bowels pushing of their own accord, and the seat of the huge, fluffy diaper filled up with muck. The spell had apparently filled her up more than dinner, though, and it was half a minute of her sitting, biting her lip and avoiding eye contact with Twilight as the back of the diaper managed to gain a visible bulge in spite of its already cartoonish size, the warm mass making the diaper sag a bit, only held back by the onesie keeping everything in place. She felt a slight tingling between the legs but ignored it, Twilight was in the room and she didn’t want to sink that low one way or another.

Once everything was done, Rainbow got back to her hooves shakily. Her hind legs were spread wide apart, making it hard to stand on them and making her knees wobble, and the diaper felt heavy enough that it threatened to make her fall on her rump again. Twilight had levitated over a closepin for herself at some point during Rainbow's mess, and she tried to smile encouragingly in spite of the gross task ahead of her.

"Well, let's get you cleaned up," The unicorn said, feigning enthusiasm. The diaper pail she had summoned would be barely large enough to hold the diaper, and she wasn't looking forward to cleaning it up, even with magic.

"Yeah..." Rainbow said, sitting down, blushing as the squish made her shiver, and then lying back on the changing table. She was glad to have Twilight's help, but the immense bulk between her flanks still made her feel humiliatingly juvenile, and knowing that the accident had been on purpose wasn't helping much. Looking to Twilight expectantly, she tried to hold her breath.

Twilight Sparkle wrinkled her nose in anticipation as she reached out with her magic, taking the bright metal snaps on the onesie to yank them off so she could get at the diaper. In an unfortunate trend of late, though, they didn't budge. Tired and not thinking about the consequences, Twilight added a little juice to the spell, yanking harder at the buttons in case they were simply stuck, struggling to remove them so she could get Rainbow into a clean diaper.

"What's taking so long?" Rainbow Dash asked, curious why Twilight was taking so long on the first step until she felt her bladder start to suddenly fill up, her bowels grow crampy again, saw the magic glow hovering without effect on the onesie's snaps, and her eyes went wide. "You have GOT to be kidding me!" As Twilight’s horn continued to glow, though, she felt her bladder fill to the point where she lost control again, feeling her bladder give way as the urine spilled around the diaper’s other contents to get to the padding where it absorbed, making the diaper get a little heavier still. It was probably good that the diaper had grown in size when Twilight tried to teleport it earlier, since otherwise it would almost definitely have leaked.

“St-stop!” Rainbow yelled, before she would be forced to mess the diaper again. Her need to go wasn’t nearly as bad as it had been before she had gone when Twilight finally realized what she was doing and stopped, but it was definitely noticeable.

“I’m sorry,” Twilight said, quickly cutting off the magic. “H-how do you feel?”

“Crappy,” Rainbow Dash punned. “How d’you think I feel?”

“I’m sorry, Rainbow,” Twilight said, almost sounding ashamed at being unable to help her friend. “But I can’t figure this out right now, I’m dead on my hooves. Can you wait until morning to get changed?”

Shrugging, Rainbow said, “Do I have a choice? I definitely can’t sleep with this thing on.”

“Sorry,” Twilight said again. “I’ll get up really early and we can go find out what happened at the party right away, find the counter-spell, and get you changed as fast as possible.”

Not seeing much of a choice, Rainbow Dash nodded. “Fine,” she said, starting to sit up and feeling her diaper squelch between her legs, making her blush again. Maybe having a little time alone in the diaper would have one advantage…

As she headed to the door, Twilight paused. “Want me to get a fan pointed out the window?” She asked, thinking it would help with the smell. The pegasus nodded, and Twilight’s horn started to glow. A small metal fan hovered in, plugged itself into the wall, and whirred to life blowing at the window.

“Thanks,” Rainbow Dash said, feeling grateful. Twilight wasn’t proving to be as magically inclined as she had hoped, but the unicorn was being considerate and helpful where she could.

“Oh, and real quick,” Twilight added, her horn glowing briefly as she cast one more spell before turning and heading to bed before Rainbow Dash could ask what the spell had done.

As the door shut and Rainbow’s pacifier popped between her lips once again, she slumped back into a sitting position, sinking into the diaper like a small-ish beanbag chair, trying to decide if she wanted to cry, sleep, or experiment with squishing on the crotch of the diaper. Whichever option she wanted to do, though, it seemed like a good idea to get back in bed, so she struggled back to her hooves and crawled back under the covers.

When she rolled onto the mattress, though, she heard a plasticy crinkle that didn’t come from her diaper. Confused, she looked up for a second before realizing that the bedsheets had been turned into plastic. ‘So that’s what Twilight was doing,’ she realized, trying to decide if she should feel annoyed or just glad that she wouldn’t ruin the bed.

Staring at the ceiling, feeling a confused mix of emotions. One forehoof drifted down towards the diaper as she lay there, though, and she gave a tentative push into the front of the diaper, making the plastic back crinkle as she felt the mess squish against her. She would have gasped if the pacifier hadn’t been placed immutably in her mouth, but it still made her eyes cross slightly as she felt a wave of pleasure go up her spine. She hadn’t had any time alone for ‘Solo practice’ since before the Hearth’s Warming Eve party, and she was beginning to feel it. Pushing against the diaper again, she shuddered and reminded herself to stay quiet before remembering the pacifier would do that for her.

‘No, stop, what the heck am I doing?’ A little voice shouted, in the back of her head. ‘Do I realize how gross this is? I’m trying to jill off into a diaper! A messy diaper!’ Groaning, she briefly wished that the voice in her head wasn’t making sense.

‘Come on,’ she told herself. ‘It’s no big-’

‘It’s so UN-COOL,’ the voice insisted. ‘I’m not going to do something that gross.’

‘Pleeeeaaase..’

‘No way!’

‘Nopony will ever know, and it’s not like this will be a regular thing!’

‘Well… I guess that makes sense, if- Wait, no! Not going to happen. I’m going to get to sleep, and tomorrow we’ll figure out the counterspell, go home, and clop off to Daring Do slash-fiction like normal ponies.’

‘Fine...’ She decided, rolling her eyes and pulling her hoof away, rolling over in bed, and trying to get some sleep.

When she heard Twilight coming down the steps, and when she heard the knock on the door, Rainbow groaned. She had gotten little sleep the night before: She tossed and turned in bed when she tried to lie down, she slipped backwards and landed on her padded butt when she tried to pace on the ground, and she ran out of room and got frustrated when she tried to pace in the air.

"Rainbow Dash!" Twilight's annoyingly cheery voice rang out. She didn't really sound that upbeat, but to Rainbow Dash's sleep-deprived brain, anything more singsong than a dry monotone giving a speech about rocks was going to seem grating and annoying. "Time to get up, we've got a lot of research to do today!"

As the purple unicorn opened the door, she received a pillow to the face as Rainbow Dash groaned in annoyance. Twilight quirked an eyebrow, but didn't say anything until Rainbow finally rolled out of bed, getting to her hooves and seeming to smile for a fraction of a second as her diaper made a 'Squish' noise before a more annoyed and uncomfortable expression replaced it. Taking a second to levitate the pacifier out of Rainbow's mouth, Twilight waited to hear what she had to said.

"What are we even going to do today?" Rainbow complained, as Twilight picked up the pillow with her horn and floated it back to the bed, trying not to make a face at the smell which had permeated the room in the few hours she had been asleep. Moving her tongue about her mouth to try and deal with the sudden dry mouth caused by the removal of her pacifier, Rainbow said, "We tried science, we tried reading, what the heck else can you do?"

"Investigation!" Twilight declared, trying to remain optimistic despite her pegasus friend's rather gloomy outlook. "We know that you were... Afflicted, we'll say, right after the Hearth's Warming Eve celebration, so whatever happened, I'm sure we can track down whatever caused this if we ask around with ponies we know!"

"Wait," Rainbow said, rubbing her forehead with a hoof and trying to think straight. "You expect me, stuck wearing this, to go trotting all up and down town asking ponies if they remember anything from the party?"

"No, no," Twilight said, shaking her head before pausing uncertainly. Her horn glowed for a moment, and after a second a clothes pin flew in, clipping over her nose. When she spoke again it was with a nasally tone, but she tried to ignore it. "Rarity and Pinkie Pie already know, and we can trust Applejack and Fluttershy to keep the secret. They're our closest friends! I thought you could head out to Sweet Apple Acres and ask AJ what she remembers while I go talk to Fluttershy. Split up, deal with this twice as fast!" She smiled reassuringly, and Rainbow Dash couldn't decide if it was endearing or naive.

"You really think that will work?" She asked, flapping her wings to take to the sky as it were, at least to get off the ground. In the air, the diaper at least wouldn't make her waddle when she walked, and with the onesie holding everything in place and keeping the diaper from sagging, it almost looked like she hadn't crapped herself. Almost. If you didn't look to close. She hoped.

"Sure," Twilight said. "If we can find out what caused this, it'll make finding the counterspell or cure much easier!"

Rainbow shrugged, sounding unsure but not wanting to argue. If Twilight thought it would work, it was at least worth a shot. And Sweet Apple Acres was pretty secluded as far as Ponyville institutions went, if Rainbow could take off from the library and not slow down until she got there, nopony would even notice if she was extremely lucky.

"Right," she said, feeling her hindquarters start to itch uncomfortably once again. Unable to scratch without simply pushing around the seat of the diaper, she grimaced and tried to ignore it. "So... I'll just go do that, then?"

Twilight nodded, but added, "Unless you wanted to have some breakfast first, but I can see why you wouldn't."

"Right..." Rainbow Dash doubted she could stomach much with the smell of manure floating around her, so she just stretched her wings and hovered out into the library proper, quickly moving towards the balcony. "Just meet me there, okay? I don't want to have to sneak back into town." Rubbing her eyes and yawning, she waited a second for Twilight to agree to the meeting place, before heading out the window. A blue streak, surely nopony would see the bulge held barely in place by a onesie between her legs. Maybe they'd mistake the foalish clothes for a flight suit. Maybe the other pegasi wouldn't notice a lingering smell. Back in the sky for the first time in what felt like years, Rainbow couldn't help but smile. She was on a mission. "No stupid curse can stop me!" She told herself aloud. "I'm Rainbow D. Dash, and the D is for darMmpphhp!" Her self-motivating speech was cut off as her pacifier reappeared between her lips. Rolling her eyes, she pushed for top speed, compensating for the extra weight between her hind legs, and made a beeline towards Sweet Apple Acres.

As early as she and Twilight had gotten up, it seemed like Applejack had gotten up earlier. Just as she always seemed to be doing, she was out in an apple grove, though without leaves nor fruit on the trees it seemed like a pointless endeavor to Rainbow. Seeing the blue streak in the sky, Applejack looked up, waving at Rainbow Dash as the pegasus approached.

Just before they could exchange the usual 'Heya Applejack, Howdy Rainbow,' greetings that seemed trademarked to the two ponies, though, Applejack noticed the matter at hoof. "Uh... Rainbow Dash?" She asked in confusion as the pegasus landed. "Wha're you wearin' a used diaper?"

Rainbow blushed a bit at AJ's reaction, glancing around to make sure nopony was in the vicinity, but it was just them, the cold, and the trees. For once, Rainbow was a little grateful for the onesie since it was actually pretty warm, but on the other hoof the contents of her diaper were starting to get a little clammy, which made things that much more uncomfortable, and the itch that wouldn't go away had started to turn into a sting. Rainbow Dash knew far too little about foal raising to know what Diaper Rash was, but even without knowing she had the common sense to know that the muck clinging to her flanks and thighs probably had something to do with the growing discomfort.

Right, AJ was standing there looking confused and looking for an explanation. Clearing her throat, Rainbow Dash gestured to the pacifier and mumbled, "Pathfaw, cn'taktaht."

"Wha'?" Applejack asked, confused. "This some sorta dare, Rainbow Dash? Did yah lose a bet to Pinkie Pie?"

"Annadyatowamovedapalthafawah," Rainbow Dash explained again, gestured heavily towards the embarrassingly juvenile device stuck between her lips, all the speech making a bit of drool run down her chin.

To Rainbow's annoyance, though, Applejack didn't seem to get it. "Look, Rainbow Dash, ah don't care what you're up to right now but ah gotta inspect all these trees tah make sure we ain't got no problems come spring. If yah'll are jus' gonna make foal talk n' stink up the farm, ah'd appreciate it if you got outta my mane."

Rainbow Dash groaned, rubbing her head with a hoof and trying to think of what to do. After a second an idea came to her, and she drew with her hoof a brief message in the dirt. Her hoofwriting was awful, but it was clear enough. 'I can't takeout pacifier u need 2,' it read, short and to the point. Applejack at least trotted over to read it and, deciding to humor Rainbow, reached up and yanked the object from the rainbow pegasus's mouth.

"Now what 'n the hay is goin' on?" She asked, getting a little annoyed. Rainbow Dash took a breath, her mouth feeling dry but blissfully free to talk.

"It's kinda  a long story," Rainbow said, moving her tongue around in her mouth and trying to act casual.

"Really?" Applejack asked, sounding skeptical.

Sighing, Rainbow Dash shrugged. "When I woke up a couple days ago, right after the Hearth's Warming Eve party-" She heard a noise, and her head jerked to look at what it was. A branch falling from a tree, apparently. "Uh, where was I?"

"The party," Applejack filled in, sounding a little impatient.

"Right, yeah. So when I woke up the next day, I was wearing a diaper, and it's cursed or somethin' cause it won't come off."

Raising an eyebrow, Applejack's demeanor shifted slightly away from annoyance. "You ask Twi' about this? She's gonna know a lot more 'bout curses than ah will."

"Yeah," Rainbow Dash said. "We've been trying to figure something out, but her books don't say anything about a, uh, diaper curse."

"So the getup, that's your attempt to hide everythin'? 'Cause it's really not workin," Applejack pointed out.

"No, it's cursed too," Rainbow Dash explained, hoping this didn't all sound as stupid as she thought it did. "Twilight figured out-" Another noise, and again Rainbow Dash jumped. She couldn't stand the thought of anypony seeing her like this. But, again, it was nothing. "Um, Twilight realized that she could take off the diapers as long as she, uh..." Blushing, she forced out the words, "Changed me... But if I try and take them off or if she doesn't... change me into a clean diaper, it just makes me need to go more. But last night, I woke up and the onesie was on and we can't get it to come off at all."

Applejack listened to it all, seeming skeptical, but at least she was willing to hear Rainbow Dash out. "Okay..." She said, finally. "And what 'xactly do yall need me for?"

"Well," Rainbow Dash said, finally getting to the reason for her visit. "Since this all started right after the Hearth's Warming Eve party, Twilight thought it maybe started there, and so we're going around asking ponies if they noticed anything that might cause, uh... This." Hearing the wind rustle through the trees, she jumped behind a tree to hide before realizing nopony had made the sound.

"Jumpy, aren'cha?" Applejack commented, waving a hoof in front of her nose to help combat the smell. "Ain't nopony out here 'cept you and me. Apple Bloom's gonna be asleep for another hour 'n Big Macintosh is on the other side of the farm." She paused to consider the party, though, remembering back to the party and trying to recollect what had been going on. "Ah don't remember anythin' suspicious. I didn't see anypony goin' around castin' curses on ponies, at least."

Rainbow Dash was a little disappointed, but there was still a chance that Fluttershy knew something, maybe even Rarity or Pinkie Pie. Still, it didn't hurt to ask a few more questions. Starting to sit down and immediately regretting it as her sagging diaper squished against her rump, feeling both really uncomfortable and pretty great all at once. Blushing, she quickly hopped back to her feet, swallowing to try and help the uncomfortable dry mouth experience. "Well... Do you remember if anypony seemed particularly interested in messing with me?" She asked, trying to get back on topic.

"Uh... No, but wouldn't yall be the one to notice that? Ah know you're unobservant, but if somepony's followin' you around, I think you'd be tha’ one who'd be able to tell."

"Uh... Yeah, I didn't notice anything," Rainbow Dash agreed. "But I was all over the place, so-" There was another noise, one that absolutely had to be hoofsteps, and in a rush to stay unseen she zipped into the tree, hiding in the branches. Without leaves it wasn't particularly useful, but it was better than nothing.

"Would ya' get down from there?" Applejack asked, a little exasperated. "You're hearin' things, Rainbow Dash, nopony's around here!"

"I'm not gonna come down until I'm sure of that!" Rainbow countered, looking around with urgency, which looked rather ridiculous with her onesie and overfull diaper making everything she did seem comical.

"You're bein' paranoid!" Applejack insisted. "And I gotta inspect this tree, which ah won't be able to do if it smells like your dirty diapers!"

"Hey!" Rainbow Dash protested, a little insulted. "I can't do anything about that, this onesie won't come off!"

"Get down from there," Applejack insisted, bucking the tree to jostle Rainbow off her branch. It worked, and Rainbow tumbled from the tree.

"Aaah!" She yelped, landing on the seat of the onesie. Even with the extra padding provided by the diaper and its... Contents, the landing hurt. Especially since Rainbow Dash's flanks were already starting to sting, the landing was pretty painful. Eyes starting to water, Rainbow bit down on her tongue to deal with the pain, not wanting to start crying on top of everything else. Even as much as it hurt, though, feeling all of her weight slam into the mushy contents of the diaper felt freaking awesome, enough to make her breath in sharply and blush a little bit, hoping Applejack wouldn't notice the side effect of the fall. She wasn’t sure, but it felt like the good feelings when the diaper got smooshed were growing in intensity the longer she went without a change. "Not cool!"

"Yeah, sure," Applejack said, looking pretty annoyed. "Ah thought you said that you couldn't change your diaper on account of the onesie. Ah don't appreciate bein' lied to, Rainbow."

"What?" Rainbow Dash asked, confused. "It's the truth! The buttons are stuck or something."

"Really," Applejack said, eyes narrowed slightly. "Yall expect me to believe that?"

"Yeah!" Rainbow Dash said, getting to her hooves and gesturing towards her crotch to make her point, all the while keeping eye contact with Applejack. She wasn't about to back down, being called a liar wasn't something she appreciated. "Why wouldn't you?"

"'Cause the buttons came undone a minute ago," Applejack said, rolling her eyes.

That caught the pegasus off guard. "Wh-what?" She asked, looking between her legs. Sure enough, the flap on the onesie had come undone and was dangling open, her diaper bulging out of the opening now that it wasn't being held in place. She grinned, it must have simply been made to open after she'd been wearing it a while. "I, uh, gotta go find Twilight!" She said, grinning as she took to the sky.

"Uh, okay?" Applejack said, seeming a little disconcerted by the whole encounter. It was a little surreal, after all, Rainbow couldn't blame her. "Ah'll see you later, ah suppose?"

"Later!" Rainbow Dash agreed, before vanishing into a blue streak, leaving nothing behind but a smelly odor which lingered in the orchard. It wasn't too far between Sweet Apple Acres and Fluttershy's cottage, and Twilight's walk was so much slower than Rainbow's flying that she managed to cut off the unicorn before she even reached her destination.

"Twilight!" Rainbow called out, landing as she saw her friend. Despite the difficulty staying upright she stood anyways, not wanting to sit down in the diaper and end up moaning in front of Twilight. "Great news! The snaps on the onesie came loose! I can finally change out of this stupid thing!"

She landed, beaming as Twilight looked at her with a confused expression. Leaning slightly to take a look at Rainbow's hindquarters, she said, "Uh... No, they didn't."

"What?" Rainbow Dash asked, looking again. Sure enough, the snaps were back in place. "Wh-what? You are kidding me! They were free just a minute ago!"

Twilight sighed, glancing over to Fluttershy's cottage a few hundred yards away before returning her focus to Rainbow Dash. She momentarily wished she had brought along that clothes pin, before thinking more productive things. "Well, maybe you triggered part of the curse or something. Did you do anything unusual?"

"I, uh, hid in a tree?" Rainbow Dash suggested.

Shaking her head, Twilight said, "No, if that did it then you wouldn't have had any trouble in the library. It's inside a tree, remember?"

Blushing, Rainbow said, "Uh, yeah. Right. I also fell on my butt, but that's it. The rest of the time I was just talking to Applejack."

Twilight considered it for a minute, thinking about what the fall would have to do with things.  Having a thought, she smirked as she realized what the issue was, stifling a giggle.

Rainbow Dash, of course, didn't like being giggled at and blushed. "What? What is it?" She asked defensively.

“Just… Hold still, I have an idea how to get you out of there,” Twilight said, her horn starting to glow.

Rainbow checked, but nowhere on the onesie was there any sign of magic. “Uh, what are you doing?” She asked, getting a little worried. If Twilight cast a spell on her that failed, her diaper would get so heavy she wouldn’t even be able to stand, much less fly.

“Just hold still,” Twilight said, putting a hoof to her mouth as she snickered.

“Why, what-” Rainbow Dash jolted as she felt something smack against her flanks, three times in rapid succession. She yelped, jumping into the air and reaching to rub her stinging plot with her hooves before remembering that she’d just be rubbing the seat of the diaper. “What in the hay was that for?” She asked, seeing a stick levitating in the air, held by Twilight’s magic.

“Look,” Twilight said, gesturing towards Rainbow’s crotch with a hoof. Rainbow looked down. The onesie’s flap hung open, buttons undone.

“But… How… Awesome!” Rainbow Dash finally said, somehow grinning and frowning at the same time. “Wait, what? You have to smack me in the butt every time I need a diaper change? That’s so stupid!”

Twilight couldn’t help but smirk. “Technically, it’s called a spanking,” She pointed out, leaving Rainbow Dash to blink.

“This curse sucks!’ The pegasus said, finally landing.

“We’ll get it figured out,” Twilight promised, horn glowing as she summoned the necessary changing supplies. “Lie down, okay?”

“What, here?” Rainbow asked, looking around. There were no ponies around, but they were outside and really freakin’ public.

“If we go somewhere else, I’ll have to undo the onesie again,” Twilight pointed out. Sighing, Rainbow Dash realized she had a point.

Lying down on the pad as Twilight summoned it, Rainbow just stared at the sky as Twilight got her business done. The unicorn was was getting better and better at cleaning up diapers, even with the excess work Twilight had to do cleaning up a mess that had been stewing overnight. As she got everything wiped up, though, tossing the diaper and wipes in the summoned pail, Twilight recoiled.

“Er… Rainbow, I think you’re getting diaper rash,” she said. “Just a second?”

“Sure, but what are you doing?” Rainbow asked, looking up for a moment.

With a pop, Twilight made a bottle of something appear in her hoof, squirting a glob of some kind of lotion into a hoof. “Rash cream,” she explained, gingerly applying the lotion to Rainbow’s flanks. This was the first time there had been any hoofs-on contact during a diaper change, and both Rainbow and Twilight blushed their way through it while the cream was smeared in place.

As soon as that was done, Twilight slid a fresh diaper into place, taped it up, and before Rainbow could even sit up the onesie’s buttons shot up, snapping in place over the diaper.

“Did you find anything out when you talked to Applejack?” Twilight asked, as Rainbow Dash got to her hooves.

“Not really,” Rainbow replied, shrugging. “But AJ was a bit of a long shot anyways, she’s not exactly the most social pony ever.”

“That’s true,” Twilight said, frowning in thought, “Not that Fluttershy will be much better. You want me to handle this while you get some rest? You look pretty beat.”

Considering it, Rainbow Dash nodded. She hadn’t slept much the night before, and now that she was cleaned up she was probably going to be able to get some rest. “I’ll see you back at the library, okay?”

Smiling, Twilight said, “Of course. As soon as I find something out, I’ll come let you know.”

“Sweet,” Rainbow said, hopping into the sky with a flap of her wings. “Catch you later!” She was feeling a lot better, with no embarrassing mass between her thighs and no repulsive smell lingering in the air. Once she got some rest, Twilight would have the cure and this whole debacle would be over with.

Taking flight, she picked up her pace enough that her onesie wouldn’t be easily identifiable. She passed a couple pegasi in the air, but none payed much attention to Rainbow Dash, assuming she was simply practicing or training for one stunt or another. She was getting better at flying with her legs bowed out and a little bulk throwing off her direction, and so when she dove down towards the library she managed to zip in through the second story window without much trouble. Rolling into the bed, she curled up beneath the blankets and smiled.

Things were going to be okay.

Heh heh heh. Well, at least the spell works. Serves her right for getting in my way.

Chapter Five

Fluttershy approached the door to the library, cautiously looking around. Nopony was there, but Twilight had warned her that she should be as discreet as possible, and so she wanted to be extra special careful that nopony saw. She wouldn’t want Rainbow’s secret to get out, that would be so embarrassing for her.

Tapping on the door with a hoof once she was sure nopony was watching, Fluttershy said, “Um, hello?”

No answer came, but that wasn’t a surprise. They were probably busy, she could come back later. Twilight had said to show up early, but maybe they were still asleep, or busy, or had changed their minds… She would wait a little bit and try again in a little bit.

“Now, Rainbow Dash, hold still!” Twilight’s voice was just barely audible through the door, but Fluttershy had keen ears, from years of talking with bunnies and beavers and other little forest creatures with their soft voices. “This is for your own good!”

“Ow!” Rainbow’s cry of pain was obvious and clear, as was the sound of a hoof smacking against something. “That really hurt!”

“That’s the point,” Twilight said, sounding stern. “If it doesn’t hurt, it won’t accomplish anything! Stop- Squirming!”

“OW!” Rainbow Dash yelped again, sounding really hurt. Fluttershy chewed her lip, looking from side to side and trying to decide what to do as Rainbow said, “I’ll stop squirming when you lemme up!”

“Your diaper leaked all over my bed, Rainbow Dash, I’m not letting you up until I’ve finished your spanking. Or don’t you want me to change your diaper? Because you’re not getting a change until this is over!” Twilight sounded stern and a little annoyed as she said it, and Fluttershy heard another collision of hoof against… Something. Probably Rainbow’s diaper. “Why didn’t you sleep in the guest room? I put a plastic sheet down just in case this very thing happened!”

“OW OW OW!” Rainbow Dash repeated, starting to cry. Fluttershy couldn’t take it any more. She didn’t like to invade their privacy, but Twilight was just being too mean to Rainbow Dash. Kicking down the door, she saw a bizarre tableau. Twilight was sitting in the center of the room on a low chair, a clothespin on her nose, and over her lap she was holding Rainbow Dash down with a hoof. Rainbow herself was wearing a blue and gold foal’s onesie, or at least something resembling a blue and gold foal’s onesie.

The sleeves were short, the neck formed a V shape,. A gold ribbon was pinned to the front, with a matching blue pacifier dangling from the end, and on the side the words ‘Wonderbolt in PottyTraining’ written on the side, the word ‘Potty’ crossed out by what was supposed to look like a crayon, as though the foal wearing it had tried to cover it up. Decorating the flanks, a similarly fake crayon drawing of a lightning bolt and pair of white wings were emblazoned, in a foalish redesign of the Wonderbolts logo. The onesie, altogether, looked quite like a Wonderbolts uniforn redesigned to be worn for a foal, albeit a foal the size of a full grown pegasus. Around Rainbow’s crotch the fabric was clearly wet, and Rainbow’s fur also seemed damp, no doubt from when her diaper leaked as Twilight had mentioned. Fluttershy also noticed that the flap on the onesie was unbuttoned and dangling open, revealing Rainbow’s rather disgusting diaper beneath. The smell wasn’t too horrendous, but it was bulging out visibly from its contents, and it was so soggy that Fluttershy was surprised that the diaper hadn’t simply given up and fallen off from the weight. Rainbow was bawling into her hooves, visibly shaking.

“Twilight Sparkle!” Fluttershy announced, eyes narrowing. Nobody hurt her friends, even other friends. “You let Rainbow Dash go right this moment!” She knew that the curse had put Rainbow into diapers and foalish clothing, but that didn’t mean Twilight had to treat Rainbow like a foal. Stalking forward angrily, Fluttershy gathered her will to give Twilight a stern talking to.

“Fluttershy!” Twilight said, looking a little surprised to see her. Pushing Rainbow off her lap, the pegasus just crumpled to the ground next to her, crying. “I didn’t hear you knock.”

“I’m disappointed in you!” Fluttershy said, now only a step away from Twilight, taking the unicorn by the shoulder and making her get to her hooves and leading her to the other room so they could talk in private. “This is no way to treat your friend! You know better than anypony that she can’t do anything about her accidents, you shouldn’t be mad at her for having an accident and leaking on your bed.”

“But- Fluttershy, wait!” Twilight said, trying to slow their progress as Fluttershy pushed her towards the kitchen. She even drove her hooves into the floor, but Fluttershy angry was not somepony who you could easily slow down. “I can explain! Stop!”

“No buts,” Fluttershy said, sternly pushing Twilight through the door and into the kitchen. “There is no excuse for hitting your friend like that, especially since she’s already so embarrassed about having accidents! Now, you are going to tell me why you are so mad, and then you are going to calm down a bit, go back in there, and apologize to Rainbow Dash for hurting her!” She finally stopped to take a breath, a little of the energy going out of her. Rainbow was safe now, Twilight had stopped spanking her once Fluttershy came in, so as long as they took a few minutes to calm down and Twilight apologized, things would be okay. Still… “And you shouldn’t make Rainbow wear her diaper once she’s had an accident, it’s bad for her. Threatening not to change her until she gets a spanking is just cruel!”

“Fluttershy!” Twilight exclaimed, glaring back. “I had to spank Rainbow Dash!”

“No you didn’t,” Fluttershy said, shaking her head. “Hurting somepony else never solved anything!”

“Yes, I did!” Twilight insisted, her tone nasally from the clothespin on her nose. “Because the curse won’t let me take off her onesie unless I spank her first!”

Fluttershy paused as she opened her mouth, hesitating as she registered what Twilight said."I- Um… Oh…” She mumbled, confused. “I’m sorry. I… I guess you should go change her, then, I’ll just w-wait here I guess. Sorry.”

Putting a hoof to her forehead, Twilight sighed. “Well I would, but I’ll have to start the spanking all over again.”

Things were starting to make sense, as Fluttershy realized why Twilight had been reluctant to leave the main room a moment ago. “Oh…” She mouthed, blushing and feeling a little stupid. “I’m sorry.”

“It’s fine, you didn’t know,” Twilight said. “We were about to have breakfast, can you set the table while I start this over?”

“Okay,” Fluttershy agreed, nodding quickly. She felt bad, and if she could help out at all then she would.

Twilight re-entered the living room, trotting back over to the sniffling Rainbow Dash and putting a hoof on her shoulder. “Hey there, Rainbow Dash,” she said, comfortingly, as she removed the pacifier from between Rainbow’s lips, letting it dangle from the ribbon. “How’re you feeling?”

Trying to bring up her snark shields, Rainbow said, “My butt hurts, whadya think? Can’t you just freakin’ change me already?” It was a little harsh, but Twilight understood why Rainbow might be a little sensitive at the moment.

“Well, er,” Twilight started, unsure exactly what to say. “When Fluttershy came in, she… Marched me into the other room.”

Rainbow raised an eyebrow, confused, aher eyes went wide in realization and she looked down at her crotch to see the yellow-gold flap buttoned squarely back in place, the loaded diaper bulging out beneath the fabric. “B-but…” She stammered, horrified. “We have to do that again?”

“Sorry,” Twilight said. “We can wait a little bit if you need some time, maybe get you changed after breakfast. How does that sound?”

Rainbow considered it. Her butt was stinging badly, she didn’t know if she could take another spanking like that right away, and as she sat up she felt a tingling that reminded her a messy diaper really wasn’t so bad. She could put up with the smell until after breakfast. “It can wait,” she said. “What’s on the menu, more applesauce?”

Twilight nodded sympathetically. “Sorry, but unless you want to go back to foal food it’s that or nothing.”

Tugging at the rubber collar around her neck uncomfortably, Rainbow commented, “Eh, applesauce isn’t bad. Gets a bit old, but I don’t mind.” Up to her hooves, she headed towards the kitchen. Her waddle was pronounced but more fluid than before, it looked as though Rainbow had gotten rather used to walking with padding between her legs, and even the mush between her thighs didn’t seem to slow her down.

Impressed to see the table set with napkins, silverware, and even little serving trays when they walked in, Rainbow whistled. “Nice job setting the plates,” she said, almost making a crack about how Fluttershy had made her need another spanking. Remembering what had happened with Pinkie Pie, though, she decided not to comment. She didn’t need to make two friends cry in the same week.

“I’m sorry,” Fluttershy said anyways, as though Rainbow actually had chastised her. “Here, you wanted the applesauce, right?” She asked, quickly dishing some up on Rainbow’s plate.

“I don’t know if ‘Wanted’ is the word for it,” Rainbow replied, as Twilight took a seat at the end of the table. “But yeah, that’s for me.” Following Twilight’s lead, then, she took her seat where Fluttershy had placed it.

The moment her padded behind was in the chair, though, there was a flash of light and the circumstances changed. The seat morphed, growing taller, a wooden tray appearing over Rainbow’s lap. Her forelegs were pinned beneath the tray, rendering her unable to move them much, effectively trapped in the high chair. The back of her diaper was pushed into the chair’s seat, causing the mess smush to the sides and making the leaky diaper to trickle a little more urine down the back of her legs. Even as she shivered in pleasure, Rainbow grimaced.

“Ew ew ew!” She said, squirming in the high chair, which only made both her arousal and discomfort more intense. She hadn’t even noticed the bib now pinned to her collar, hanging over the onesie so that it wouldn’t get any stains on it.

Twilight and Fluttershy both looked over in surprise, seeing Rainbow Dash in her newest predicament. “Well,” Twilight said, a little amused. She’d hate to be in Rainbow’s horseshoes, but the curse was certainly well design to embarrass its victim. “At least it’s obvious how to get you out of this one.”

“Yeah, how’s that?” Rainbow asked, trying to pull her forelegs free from under the high chair’s tray.

“I think you just have to eat breakfast,” Twilight said, shrugging.

“Yeah?” Rainbow Dash said, jerking and wiggling in every way she could think of, accomplishing little. The wonderbolt-styled onesie felt restrictive, and between it and the high chair she was feeling downright claustrophobic. “And how am I supposed to do that? I can’t even move my- Oh, you are KIDDING me!” She shouted, as she saw the spoonful of applesauce levitating in front of her face.

“It’s not that bad,” Fluttershy said, trying to calm down her friend a little bit. “You told me that you always wanted a sexy mare to hoof feed you, right?”

“Well- Yes, technically,” Rainbow admitted, “But this is totally not what I meant! I was thinking something chocolate while we’re lying in bed, not- Wait, besides, Twilight isn’t even sexy!”

“Hey!” Twilight protested, a little miffed. “I’ll have you know, some ponies find intelligence to be quite attractive.”

“Yeah,” Fluttershy added on. “And Twilight really is very pretty!”

Rainbow and Twilight looked at Fluttershy, raising their eyebrows almost in unison.

“Uh… What.” Rainbow Dash questioned, her voice deadpan.

The spoon tilted slightly in the air and the applesauce fell from it as Twilight forgot about her levitation spell, leaving the sauce to splatter on the high chair’s tray. Blushing, Twilight asked, “You… You think I’m pretty?”

Fluttershy looked down at her hooves, her face awash with pink as she blushed. “Well- I, you see… Ye-”

“HEY!” Rainbow Dash interjected, feeling a bit miffed herself. “How come when you think I’m coming onto you it’s all ‘Oh, Rainbow, we’re just friends’ but when Fluttershy does it it’s all blush and schoolgirly stammer-Mpthbhphhp!” She was shut up as the pacifier was jammed into her mouth by Twilight’s magic.

“Fluttershy… I c-can’t really think about this right now, sorry, I really need to help Rainbow Dash. If this curse keeps getting worse, well… We’ll talk about this later, okay?”

“O-okay,” Fluttershy said, blushing even more. “I’m s-sorry, I didn’t mean to cause any problems…”

“Mmmbmbph!” Rainbow Dash protested, annoyed. “Wemah ouda vis’ fing!”

Twilight’s horn glowed and she pulled the pacifier away from Rainbow’s muzzle. “Don’t make a big deal out of this,” She warned, refilling the spoon. “Open up?”

“Fine,” Rainbow said, feeling a little silly at being fed, but with her hooves pinned there wasn’t much else she could do. Opening her mouth wide, Twilight’s magic moved the spoon towards her mouth, hitting its target… Mostly. At the last second the spoon wobbled, getting a bit of the applesauce on Rainbow’s face. Swallowing and frowning, Rainbow said, “Uh, my mouth isn’t a hard target. What the hay?”

“Sorry, I think the curse is interfering,” Twilight said, as she refilled the spoon. Trying again, she got the food into Rainbow’s mouth again, but the third spoonful ended up more on her chin than in her mouth.

It was hard to enjoy the taste of the applesauce when the stink of her diaper permeated the kitchen, but Rainbow Dash choked down every bite Twilight fed her. Hindquarters still stinging, she squirmed in the high chair every so often, but that didn’t help much more than making her horny, so she tried to show a little self control. By the time the bowl of applesauce was empty, her face and bib were both splattered with applesauce, and she felt overfull, but the high chair was still in place.

“What gives?” Rainbow Dash said, a little annoyed. “I thought you just had to feed me?”

“Here,” Twilight offered, her horn glowing as she retrieved an empty bottle from the cupboard and a jug of milk from the fridge, filling it and snapping on the rubber nipple. “You probably have to drink this, too.”

Rainbow Dash rolled her eyes and opened her mouth, letting Twilight levitate the bottle in place and suckling. It took a couple minutes, but as far as it went it wasn't that bad. She was thirsty anyways, and nopony was teasing her. In fact, the only noise was her suckling and the other two ponies’ chewing, so the time passed quickly.

Still nothing.

“Now what? You said that would do it!” Rainbow Dash complained, jerking again at the high chair.

“Well, that’s what I thought. Maybe there’s some other trigger?” Twilight theorized. “Something more juvenile and foalish.”

Quietly, Fluttershy started, “Um… Maybe…”

“What’s more foalish than being fed foal food in a high chair?” Rainbow Dash shot, exasperated. “You want me to say ‘Goo goo gaga’ a whole bunch?”

“Maybe…” Fluttershy started again, but she was cut off just as quickly.

“Or should I just start crying for mommy? Suck my hoof? Twilight, this is so stupid!”

Fluttershy was about to speak again, when Twilight’s horn glowed, jamming the pacifier one more into Rainbow Dash’s mouth. “Fluttershy is trying to say something,” Twilight told her, disapprovingly. “If you’d let her talk, she might have a good idea. Go ahead?”

“Well… I was thinking, maybe, does she need to be burped?” She offered, quietly.

Twilight looked at Rainbow Dash, and then back to Fluttershy, and then at Rainbow Dash one more time. Trotting to Rainbow’s side, she took out the pacifier and gave Rainbow a couple pats on the back.

“This is stupid,” Rainbow said, after the first couple pats did nothing. “It’s not gonna-” She was cut off by her own belch, and as soon as the burping was done the high chair vanished, leaving only the regular wooden stool that had been there a moment before… Half a foot below where Rainbow had been sitting.

With a yelp, the pegasus fell the six inches and landed with a splurchy noise, gasping as she felt the diaper’s contents shift between her thighs. “Um… Can you just get me changed now? My butt’s feeling a bit better.”

“Of course,” Twilight agreed, getting out of her chair and extending a hoof to help Rainbow up. “We’ll just be a moment, Fluttershy, and then we can get going.”

“Going where?” Rainbow asked, before turning to Fluttershy to add, “And please don’t drag Twilight away again, okay?”

Fluttershy blushed and looked down, a little ashamed. “I… Uh, okay…” she said.

Realizing she had upset Fluttershy, Rainbow hung her head guiltily, feeling especially bad when Twilight shot her a glare. Sulking, Rainbow trotted to the living room to get changed. With Twilight a second behind her, the pacifier re-appeared in her mouth, but she didn’t bother having Twilight take it out when the unicorn followed her in. She wouldn’t have much to say during the spanking, and there was no need for her mouth to feel crappy the entire time. Besides, it wasn’t actually that bad, and suckling it helped distract her from the rest of her outfit.

Pulling over a chair with a quick glow of her horn, Twilight sat down and patted her lap with a hoof, waiting for Rainbow to hop up. “I’ll try and get it over quickly,” she said, sounding apologetic.

Rolling her eyes, Rainbow Dash climbed up, shutting her eyes and  trying to brace herself for the inevitable. A second went by, then two, and just as Rainbow was about to turn her head to ask what was taking so long she felt Twilight’s hoof smack the seat of the onesie. Even with the diaper absorbing most of the impact, her already-tender hindquarters flared up in pain at the impact, and Rainbow’s eyes started to water. The next spank was a bit lower, hitting more of the diaper and hurting a little less. That was almost worse, though, and she had to suck hard on the pacifier and jam her eyes shut in an attempt not to groan in response to the pleasure she suddenly felt. Crying was embarrassing enough, but she wasn’t about to make Twilight think she was enjoying this.

No, it doesn’t matter if I AM enjoying this. Mercifully, the next spanking was far more painful, and as she yelped into the pacifier and a tear ran down her cheek, all thoughts of any personal fantasies being fulfilled practically disappeared. Though, if Twilight were to keep me bent over once the onesie comes undone and go a little gentler with her hoof against the back of the diaper, maybe- No! Stop thinking about that! Blushing furiously, she sucked on the pacifier and whimpered as Twilight spanked her again. The onesie gave in, then, blue snaps undoing the flap with a little ‘pop’.

Cracking one eye open, Rainbow Dash tentatively waited for a moment to be sure that Twilight was done. “Coow?” she asked, looking over her shoulder and noticing that Twilight was blushing almost as much as she was.

“Er… Yes.” Twilight Sparkle got Rainbow off her lap with a small push, making sure that Rainbow would land on her feet, before quickly standing and clearing her throat.

Even Rainbow was able to pick up on the fact that something was up, and she said as much. “Awe ‘ou otay?” she lisped.

“You were, er...” Twilight blushed. “Well, you were moaning.”

“Wh-wha’?” Rainbow felt the color drain from her face, mortified, desperately trying to think of a lie.

Pulling out the pacifier with a hoof, Twilight Sparkle shuffled her hooves and chewed her lip. “Er, when I was spanking you, you started moaning every time I, uh, hit you.”

Rainbow Dash blushed, shaking her head. “N-no I didn’t!”.

Twilight dropped the subject. “Let’s… Just lie down, okay?” She had no desire to have an awkward talk with Rainbow Dash about her sexual preferences or fetishes, and that conversation was getting dangerously personal.

Rainbow Dash had no problems doing as Twilight said, not wanting to admit herself that she had been so obvious during the spanking. It was the curse, though, once they got this over with she would be back to normal.

Lying down, Rainbow stared at the ceiling with her hind legs raised as Twilight summoned the changing supplies. Untaping the diaper, Twilight’s magic raced to get her cleaned up. It was like clockwork after so many times, and Rainbow was in a clean diaper and buttoned back in her blue-gold onesie before she could say a meme-worthy catchphrase.

Rubbing her flanks as she got to her hooves, Rainbow winced. “So, what’s the plan, exactly?”

Twilight smiled, sure that she had a winning idea this time. “We’re going to see Zecora.”

Chapter Seven

Rainbow Dash stretched, extending her hooves and wings wide as she blinked awake. As her wings started to extend, though, they bumped against something hard and wooden. She sat up in confusion, startled at the newest effect of the curse.

“Ow!” She yelped, banging her head on the wooden cover that topped the crib she was now in. It was just wide enough for her to lie comfortably as long as she didn’t stretch, low enough that she couldn’t sit up straight, and after a kick at one of the wooden bars, Rainbow felt sure that there was no chance of breaking out. The sunlight flickering through her windows was creating heavy shadows, letting her know that it was almost sunset, but at the moment she was less concerned with the time and more concerned with getting out.

She briefly considered calling for help. Even if she could somehow take out her pacifier to yell at the top of her lungs, why would she want to?

Er, because nopony would be able to hear her anyways. In her home, she was about as secluded as you could get without building a private cottage in the middle of the Everfree forest. Unless the mailpony was six hours late, there was no chance of anypony being around to hear her. Then again, that was a distinct possibility, but if anypony found her trapped like this she’d never hear the end of it. Rainbow Dash decided to stay quiet, laid back, and tried to ignore the squishy noise her diaper made.

“Ugh!” the pegasus groaned, rolling on her side and trying to get comfortable again. She was starting to feel hungry, but there was no food in her crib and no way to eat it if she had any. Jamming her eyes shut, she resolved to sleep some more.

…

A hoofed sleeper? Really? Rainbow thought as she woke up again, this time at some nondescript hour past sundown. Her outfit had changed again, this time to a pink-hoofed sleeper with pale blue crescent moons and stars decorating it. As an irritating touch, there were slippery soles where her hooves would touch the ground. She imagined that it would cause a lot of trouble if she had to try and walk anywhere, but the good news was that she didn’t have to walk anywhere, she was stuck in a freakin’ crib.

Suckling her pacifier, she tried to get rid of the dry mouth feeling that seemed to persist, this time simply from thirst. She hadn’t had anything to drink since that morning, and the pacifier only served as a distraction, but at least she didn’t have the feeling of dehydration combined with the dry-mouth feel she got whenever the pacifier was out of her mouth. Feeling a burble in her gut, she groaned, knowing she’d need to go Number Two again by the morning. That could wait, though. She just wanted to sleep some more, and sleep was impossible in a full diaper, especially when it squished every time she rolled over or tried to get comfortable, reminding her how horny she was. She’d hold it for now, until Twilight came. Help would come if she waited long enough, she just had to sleep and wait it out. Not bothering to try and hold her bladder, though, she just wet her diaper again, glad to note that it didn’t leak.

Aaaand back to sleep. Well, at least my napping schedule is back on track.

…

Birds could just barely be heard whistling in the distance when Rainbow Dash woke up, sunlight drifting in from the far windows. Even with her pacifier, her throat was burning for something to drink, even formula if that was the only option. Squirming, she rubbed her hoof on the seat of her diaper, trying to deal with the itchy stinging that had started to develop overnight, making her flanks feel uncomfortable even with the wet diaper soothing them a bit.

Still no sign of Twilight.

Sighing, Rainbow sat up as much as she could without banging her head, feeling her bowels strain as she did so. She needed to go, there was no doubt about it. Twilight wasn’t coming anytime soon.

Dash didn’t relish the thought of crapping herself on purpose, of course. Even as long as the curse had been going on, she hadn’t actually had a choice any other time, with Twilight’s magic or some other random effect of the curse making her go. The idea of stinking up her crib intentionally was gross, there was no doubt about it. She debated the topic in her brain, trying to decide one way or another.

Then again… I can think of a few advantages.

Jeez, I’m a pervert.

That’s not what I meant! My flanks probably won’t sting as much.

She chewed the pacifier, mulling it over. Her bowels were starting to hurt, and the downsides were growing less and less worrisome. She was Rainbow Daring Danger Diap- No, just Rainbow Dash. She was Rainbow. Dash. She could deal with an icky smell.

Now, she just had to actually convince her mostly-potty trained body that it was okay to mess her diapers. Wiping a bit of drool off her mouth, she pushed a bit, but nothing happened. Dammit, dammit, dammit. It should not be this hard.

A little less discreetly, she bent her hind legs a bit, sucking on the pacifier in an attempt not to be too noisy about it. It was bad enough she had to mess her diapers, she didn’t want to make a big deal about it.

Then again…

She was alone in her house. Nopony was around for miles, probably, and definitely nopony was within earshot. Why was she bothering to be subtle about it? Bending her hind legs further, she pushed up a bit so her butt wasn’t resting on the mattress. Tail hiking,she made no efforts to muffle her grunts of effort, pushing until finally she got her body to give in, relocating breakfast into the back of the diaper.

The padding sagged heavily as it filled up, weighing her down around the waist and making the soft, warm material of the hoofed sleeper sag at the crotch.

It felt great. Moaning as she finished, sinking her weight down into the sizeable load she had left in the seat of the diaper, she savored the feeling as the mushy mess squished around her flanks and between her legs, reminding her how long it had been since she had gotten any ‘Alone time.’

Nopony was around, right? What was the harm? Instead of faking revulsion or simply avoiding anything that would make her enjoy this too much, Rainbow Dash rocked forward slightly, shifting her weight forward to make the mess shift backwards in unison. The odor barely registered, coming in more as a peripheral annoyance than something she actually had to care about. Moaning into the pacifier, she bounced her weight up and down a little more to shift things around further, trying to spread the mess around more to increase how much contact there was between her flanks and the smelly muck.

No, wait, stop! We talked about this! She told herself, a little annoyed that she was considering this idea again, even as one of her forehooves started rubbing against the front of the diaper.

That was like forever ago! I don’t wanna wait anymore! Her libido argued, as she laid her head back on a pillow and pressed her hooves into the seat of her diaper, moaning into her pacifier at the feeling.

But it’s gross!

Do I care? This feels great!

You do have a point…

We can feel disgusted later. I haven’t had a chance to do this in like a week, just shut up and we can enjoy this!

With the moral dilemma overcome, Rainbow Diaper Dash moaned into her pacifier again and pressed both her hooves squarely into the seat of the diaper, mushing it between her legs. She was almost glad about the curse at that moment, nothing she’d done to herself had felt that good in as long as she could remember.

Biting down hard on her pacifier, she nearly shouted into it as she rocked her hips down, hooves working furiously against the crotch of the onesie which in turn rubbed the soggy padding against her. “Fffff…” She moaned, eyes jammed shut in ecstasy as she approached climax. This was going to hit hard, with days of frustration and a lot of stimulation building up to it, and in anticipation her wings were fully erect, pressed against the bars of her adorable crib as she moaned one last time, getting ready to-

A quiet, shy voice came in from her doorway. “U-um, excuse me?”

“GAHHH!” Rainbow Dash screamed, eyes shooting open as shot up, slamming her head against the roof of the crib and yelping in pain. Her wings wilted, shrinking back to her side, and any pleasure evaporated as embarrassment rushed in. Looking at the source of the voice, she saw a butter-yellow pegasus standing in her bedroom doorway, blushing profusely and looking down at her hooves. “F-Fwuttewshy? Rainbow stammered, wondering how red her face had to be.

“S-sorry,” The yellow pony tried to avoid eye contact as she replied, looking down at the floor. “I… I thought I h-heard screaming…”

“Y-yeah! Sthweamin’!” Rainbow Dash said, chuckling nervously. “I th-tho’ iwath go’a be thuck heaw foweva so I wath scweamin’ fow help!” She hoped the explanation would fly better than Fluttershy could. Now that she wasn’t reveling in it, the smell of her diaper seemed a lot more noxious and disgusting than it had. Wrinkling her nose, she asked, “Ca’ou gemme ouda hewe?”

“R-right,” Fluttershy said,staying in the doorway. “Um… okay.”

A few seconds went by, and Rainbow Dash groaned. “Da watch is ova hewe!” She complained, pointing at the wooden bar keeping the side of the crib in place.

Rubbing a hoof against her foreleg, Fluttershy nodded. “Sorry,” she said, taking a few quick steps and moving the latch. The side of the crib fell and landed on the cloudy floor with a soft thud, and Rainbow Dash rolled out of bed with a happy groan.

“T’ank ‘ou tank ‘ou tank ‘ou!” She said, her annoyance forgotten as she tasted freedom for the first time in several hours. “I fout I wath gonna be stuck foweva!” She nearly pulled Fluttershy into a big hug, but before Rainbow could she shyly stepped back, blushing profusely.

“S-so… I guess you’re okay, then? I should… Uh… Go tell Twilight…” She added, taking a step backwards, and then another.

Rainbow Dash took a flap of her wings, relieved to be flying around a bit, even with an overfull diaper sagging around her flanks and the pink sleeper restricting the motion of her legs a bit. “Suwe,” she said, barely registering Fluttershy’s words until she had stumbled backwards out the door and was hurrying to leave. “W-wai’, I…” She started to call, but by the time she hurried from her bedroom to the open living room, Fluttershy was gone.

Grimacing, she realized that she would need to get to the treehouse before she could get cleaned up.

You know, that means I still have a little time to-

NO, DARN IT, NO!

Stepping towards the door, Rainbow Dash looked back at the hoofed sleeper, bulging and weighed down around the flanks in an obvious fashion, and she wondered if she could really make it to the library without being seen. Catching up with Fluttershy wouldn’t be difficult, but she was practically wearing a neon sign that announced her foalish getup. There had to be some other way… Something that wouldn’t leave her condition known to the public…

Well… Maybe…

…

This was genius

Rainbow Dash gracefully maneuvered her vehicle above the streets of Ponyville, quiet as a cloud. In fact, it was a cloud. She had a little slit of cloud open to see out of, but the rest of her was covered up by fluffy, soft, white water vapor. Moving it around like an aerial submarine, she stayed concealed as she moved towards Twilight’s house. She had to stay low to avoid getting picked up by the day’s weather team, but even if she got a few strange glances from ponies on the ground a few feet below her, there was no way they would know who she was.

I’m like a ninja.

A stinky, diapered ninja.

Shut up. I’m taking care of that

Flapping her wings fast enough to move without disrupting or breaking apart the soft material of the cloud was difficult, and it left her moving through the streets at a painfully slow pace, but it would get her there, and nopony would ever know.

“Hiya!”

Pinkie Pie?

Rainbow Dash couldn’t exactly look down through her tiny eye-slit, but it sounded like Pinkie Pie. Who was she talking to? The streets didn’t exactly sound crowded, after all.

“Hey! I’m over here!”

She couldn’t possibly…

“Rainbow Dash! Why’re you ridin’ around in a cloud?”

Oh Celestia.

“Oh, is it ‘cause you need a cha-”

“AAAAAAH!” Rainbow Dash screamed, steering down in a sharp nose dive, nearly breaking apart her cloudcraft in the process as she crashed into the perplexed party pony, Pinkie Pie.

A few seconds passed as the cloud vapor dissipated between them like smoke clearing after an explosion, leaving the two of them standing inside a white, puffy bubble just large enough for them to stand nose-to-nose with Rainbow Dash’s hoof shoved in Pinkie Pie’s mouth.

“Mmmmwwww!” Pinkie protested, pointing petulantly at Rainbow Dash’s hoof.

“Wha?” Rainbow Dash asked, drawing away her hoof as a little slobber started to drip down the onesie.

“I said EWWWW!” Pinkie Pie told her, sticking out her tongue and wrinkling her nose. “Your hoof tastes like dirty diaper!”

Rainbow Dash blushed, deciding not to comment on why that might be the case. “B-bu’ yah… Uh, pathafiaw?”

Pinkie Pie groaned a bit, but she reached to take out the pacifier. “Oh-kaaay… But why’re you in such a crummy mood? I was just sayin’ hello!” She pulled out Rainbow’s pacifier, letting it dangle from the ribbon pinned to Rainbow’s pink sleeper. Between the two of them, there was a startling amount of pink inside that cloud.

“Because I don’t want you shouting to the whole town that I…” Rainbow Dash realized that she was shouting, and dropped her voice lower. “Because I don’t want you shouting to the whole town that I wear diapers!”

“Oh…” Pinkie Pie said, a little abashed. “I’m sorry, I should have thought of that. I, uh… Didn’t mean to embarrass you…”

Rainbow Dash bit her lip for a second, feeling bad for making Pinkie Pie feel bad. “Look, it’s fine, just… Promise me you won’t let anypony find out about the curse, okay?”

“I promise,” Pinkie Pie agreed, nodding quickly. Anything to make up for almost hurting her friend’s feelings.

“I’m serious,” Rainbow Dash added, to be totally clear. “No mentioning my diapers, no mentioning I’m wearing anything odd. Actually, don’t say anything about it at all, except to Twilight, Fluttershy, Rarity and AJ. Pinkie Pie Promise”

Happy to comply if it would fix the issue, Pinkie nodded once again. “I promise,” she insisted as she went through the motions. “Cross my heart and hope to fly, stick a cupcake in my eye.”

“Cool,” Rainbow Dash said. “Anyways, yeah, I was trying to get to Twilight’s.”

“Right,” Pinkie Pie agreed, perking up as she saw that her friend was once again happy. “Oh, right, Twilight! She can’t change you right now.”

“What?” Rainbow Dash asked, confused. “Then what the hay am I supposed to do?”

Pinkie grinned. It was a wide, eager grin. It was a very, very happy grin.

It didn’t make Rainbow Dash feel good. In fact, she started to feel a bit worried.

“Pinkie Pie…” She narrowed her eyes.

At last, it became too much for Pinkie to contain. She exploded with an excited giggle that shook her whole body, clapping her hooves.

“Twilight needed somepony to change you, and check you, and guess what? I was already foalsitting today! You know what that means?”

Rainbow Dash stared at Pinkie, looking like she had just been told she’d been rejected from the Wonderbolts. Her voice cracked as she opened her mouth to speak, and all she was able to squeak out was a terrified… “No...”

“Yes! It’s going to be the best playdate ever”

…

“Knock knock!”

“You don’t have to say ‘Knock knock, Pinkie!” Rainbow Dash said, facehoofing as she pulled the cloud a little closer around the two of them as they stood on the doorstep and waited for somepony to answer the door. The puffy white bubble was starting to smell pretty foul, with no airflow to let out the signature Dirty Diaper Smell ™.

Pinkie Pie shook her head, grinning and trotting in place. “I’m just so excited! This is going to be so much fun!”

Rainbow groaned, but didn’t argue. If Pinkie Pie was enjoying herself, there was no reason to put a pin in that. As long as she got cleaned up, it didn’t really matter which friend did the cleaning. She was about to ask how long they were going to be standing there when the door was opened by Cup Cake.

“Well, hiya there Pinkie, Rainbow,” Ms. Cake said, smiling knowingly. To Rainbow’s surprise, she didn’t react in the slightest to the smell that had to have been wafting in the open door. “You two are here for the playdate, right?”

“Mmm-hmmm!” Pinkie Pie agreed, nodding. Rainbow Dash glanced over at her pink friend, blushing profusely, and nodded herself.

“Well the twins are just upstairs, of course,” Cup Cake told them, gesturing with a hoof as she ushered them inside, letting the cloud dissipate as the closed the door and led them towards through the shop front towards the nursery. “They just woke up from their nap, so it’s about time for their lunch. Is Rainbow Dash hungry?”

Before Rainbow could respond, Pinkie Pie nodded. “Yes ma’am,” she said, smiling. “I’ll take care of that once I...” A second went by, as Pinkie’s expression briefly drifted from excitement into indecision. “I’ll get them all fed up in a minute!”

“Of course, you have to get your little one cleaned up,” Ms. Cake said, smiling patronizingly towards Rainbow Dash again.

Feeling a little indignant, Rainbow Dash decided to clear something up. “I don’t need to wear diapers or anything,” she explained, embarrassed that she even had to say it.

“Oh, I know,” Ms. Cake explained, nodding. “After Pinkie Pie came by saying that you wanted to try some of Pound and Pumpkin’s food, it wasn’t too hard to understand. Don’t worry, I think it’s adorable.” Smiling, she got them to the nursery door.

“What? N-no!” Rainbow Dash added, a little exasperated, realizing what the matronly baker was implying. “I don’t enjoy this! It’s some kind of evil magic curse making me wear diapers!”

Ms. Cake shook her head, smiling. “It’s okay, dear, you don’t have to pretend. Carrot and I think it’s sweet that you’re playing with the kids, and we promise not to say anything about it.”

Annoyed, Rainbow Dash tried to think of a better way to put things before realizing the obvious solution. “Pinkie Pie, tell her!” She said, looking for backup.

They both looked expectantly at Pinkie Pie, who was wide-eyed and looking back and forth between the two of them anxiously. “Uh…” She said, unsure what she was supposed to say. “I don’t… Er…”

Rainbow was confused as to why Pinkie was acting so strangely. It seemed like a non-issue… until she remember the promise. The promise not to say a word about the curse to anypony.

Quickly, Rainbow Dash told her, “You can tell her, seriously! It’s no big deal!”

Pinkie started to sweat, trembling as she tried to somehow explain without saying anything about Rainbow Dash wearing diapers. Ms. Cake finally broke the pause, putting a hoof on Rainbow’s shoulder. “It’s okay, dear. Don’t worry about it, just have a fun time. And your sleeper is simply adorable, by the way. Have a lovely time, dears!” She added, before turning to head out the door.

Groaning, Rainbow just shook her head and gave up, nudging Pinkie Pie to break her out of her trembling stupor. “Can you please get me changed now, please?” Aside from the smell, she didn’t want to accidentally sit down into the diaper’s mushy contents and start moaning in front of the twins. That was just… Not cool.

Wrinkling her nose in anticipation, Pinkie Pie said, “Of course, Dashie! I’ll changey-wangey your diaper-wiaper, just hop up on the table and I’ll get you all clean!”

Standing there awkwardly, Rainbow Dash paused. “Uh… Aren’t you going to, er… Give me a spanking first?”

Curiously, Pinkie Pie tilted her head a bit. “But you haven’t done any… Oh, right! ‘cause Twilight said your cutesy little sleeper won’t come off! Right, okay, uh… Right,” she repeated, thinking for a moment before pulling up a chair. “Don’t worry, this won’t hurt a bit! We’ll have you all cleaned up in no time at all!” She promised optimistically. Rainbow Dash highly doubted that.

Less than a minute later, though, Rainbow Dash found herself sitting up on the slightly undersized changing table, rubbing her stinging flanks and admiring the speed at which Pinkie Pie had gotten her all cleaned up. A little slack-jawed in awe, Pinkie Pie explained it away with, “I foalsit a lot! Whoooooo’s hungry?”

Hearing her own stomach grumble, Rainbow Dash nodded. Before she could even say ‘I am,’ though, Pinkie Pie had already slid up two high chairs and one plain stool side-by-side, jars of foal food at the ready. Rainbow Dash sat down at the stool, yelping as it suddenly morphed into the familiar changing table, hooves pinned to her lap by the tray. And, of freakin’ course, a pink bib was tied around her neck.

“Aw, dammi-Mmmph!”

She was interrupted by a spoon in her mouth, preventing her from finishing the expletive she had been about to utter. Glancing up, she saw Pinkie Pie twirling between her and the twins, who were both happily downing the foal food as Pinkie Pie fed them, gracefully dancing between the two. As soon as Rainbow swallowed, she found another spoon almost instantly scooped into her mouth.

“Pink-mmph!” She glared at her friend. She knew she needed to be fed, but darn it, at the same time as the actual foals? She was hungry enough to keep eating, but that didn’t mean she wasn’t about to try and preserve a bit of her dignity.

“What was that, Dashie? I don’t have any pink food, but don’t worry, I’m sure this is scrum-delumptious!” Pinkie said cheerfully. She giggled happily, as if having one more foal to care for, even a big one, was a dream come true.

Scowling, Rainbow Dash glared at the foals who giggled in response to Pinkie’s giggling. She was sure the pair were laughing at her!

Oh Celestia, what if they remember this when they’re older? What if their first memory of me, the amazing Rainbow Diaper Dash, is as….Rainbow Diaper Dash?!’

It was hardly a cheerful thought, but on the bright side, dwelling on that kept her occupied long enough for feeding time to come to an end.

A field of pink suddenly filled Dash’s vision. She blinked, staring at it for a few seconds before realizing Pinkie was right in her face. She yelped, the high chair shaking as her body tried to leap away without bothering to get her input on the decision.

“Gotcha!’ Pinkie grabbed and steadying the high chair as it teetered, almost on the brink of falling. The twins seemed to find the scene before them as hilarious as ever, watching Pinkie desperately trying to keep the weight of the pegasus and high chair stable. Pulling hard, Pinkie got the high chair steady again. “There we go! I guess somepony is ready for playtime, if she’s ready to jump like that!”

“Playtime? Pinkie, you’re no-mmph!” Dash’s tirade was cut off before it could start, her pacifier returning to her mouth, and setting the twins off again. She glared at them, foals or not, nopony laughed at Rainbow Diaper dash. “Tmmm datthin’ ouaamouf!” She protested, annoyed.

“Not unless you stop being such a grouchy-gus!” Pinkie Pie said, sounding immensely cheerful. “Today’s supposed to be fun! If you keep whining, it’s… The opposite of fun!”

Rainbow gave Pinkie a deadpan look, clearly not amused.

“Exactly!” Pinkie Pie said. “That! Stop giving that look! You’re upsetting the twins!” She gestured for effect, and Rainbow glanced over at the two happily giggling foals that Pinkie was somehow managing to feed even as they argued. Still, she reached up to the pacifier to pull it out.

Just as Rainbow inhaled to start complaining again, though, a big spoonful of foal food ended up in her mouth. “No complaining!” Pinkie insisted firmly. Swallowing, Rainbow started to open her mouth again, only to get another scoop of mushy food to fill her mouth.

The rest of the meal went on like that, Rainbow trying to complain and getting her mouth stopped up every time she tried to speak. Even when Pinkie Pie had to take a minute to clean up the jar Pound knocked on the floor, she ended up with the pacifier in her mouth before she could start complaining again.

“Now,” Pinkie Pie asked, as she finished off the last spoonful of food. “Are you going to keep being all grouchy, or will you start having a little fun?”

Not seeing a choice in the matter, Rainbow Dash nodded. Jeez, just get me out of this freakin’ high chair already!

“You’re not making any sense! Yes you’ll be grouchy, or yes you’ll have fun?” Pinkie asked, confused by the nod.

Groaning, Rainbow Dash realized she couldn’t exactly be clear with the pacifier jumbling up her words. Nodding again, she hoped that Pinkie Pie would understand.

“Whelp, good enough for me!” Pinkie Pie grinned, giving Rainbow’s pacifier a tug and plopping it on the high chair’s tray. “You want your bottle warmed up?”

Rainbow Dash almost turned her down out of hoof, but she stopped before she could do it. She was really thirsty, and she’d have to drink a bottle anyways to get out of the high chair. What was the harm in warming it up? It might taste better, too. Squirming a little in her diapers and smiling as she got the feeling to return to her numb behind, she made a decision.

“Sure, warm sounds good.”

Pinkie Pie beamed, nose twitching a bit as she turned to deal with a crisis as Pumpkin started chewing on the plastic spoon she was being fed with. “Just a second,” she said, “And then we can get you all changed, too!”

“What?” Rainbow asked, confused. “Pinkie, I don’t need a change. I didn’t have an accident!”

Pinkie glanced over at Rainbow Dash as she wiped a little food off Pumpkin’s face with the foal’s bib. “Are you sure? My nose started twitching, and whenever my nose starts twitching it means somepony needs a diaper change. Pumpkin and Pound are still clean, I checked!”

“Well, I don’t need a change,” Rainbow Dash insisted. “If I had an accident, I would know.” What was Pinkie playing at? Rainbow hadn’t needed to pee all morning, it’s not like she actually had accidents, she would be the first to know when she needed a change.

Nose twitching a little more, Pinkie Pie shook her head. “Well, ‘somepony’ needs a change,” she corrected, reaching to the counter and grabbing a foal bottle off the warmer. “And it’s sure not either of the twins. Open up?”

“Sure,” Rainbow said, opening her mouth to take the bottle.

Suckling, she savored the taste of the formula. It was unexpectedly good, no doubt at least partly because she was so thirsty. Even more unexpected was Pinkie’s hoof reaching down beneath the high chair’s tray to grope the crotch of the sleeper and feel her diaper.

“H-haaahy!” Dashie lisped, a little formula trickling out of the corner of her mouth as she tried to protest without giving up her bottle.

“Ah-ha!” Pinkie said triumphantly. “Just as I thought! You had a little accident, Dashie. Don’t worry though, Auntie Pinkie Pie will get you all cleaned up in just a minute!” She pulled the bottle away for a moment, giving Rainbow Dash a little time to breathe.

“But… I didn’t need to p-Mmph!” Rainbow was cut off by the return of the bottle as Pinkie Pie cut her off once again.

“No whining!” Pinkie Pie insisted sternly. “Just drink up. Don’t worry, Dashie, you know I’m super-duper good at diaper changes, you’ll be all dry again in no time!”

Pulling away, Rainbow Dash shook her head. “No, you don’t get it, I didmpphhp!” And, again, the bottle in her mouth.

Sighing, Pinkie reassured her a little more. “You’re fussier than Pound Cake before a bath! I know you’re diaper is wet, Dashie, you don’t have to pretend. It’s not a problem, okay?”

Squirming and shaking her head, Rainbow got free from the bottle again. “No, I don’t remember having to go!” She finally said, before Pinkie could get the bottle back in place.

Pausing, Pinkie finally realized what Rainbow Dash was trying to say. “Oh…” She blinked, not sure how to respond to that. “So you…”

“I actually had a freakin’ accident!” Rainbow explained, mortified. “This is not good.”

"Well, it's about to get a whole lot better." Twilight's voice came in from the doorway, the most relieving thing Rainbow had ever heard. The unicorn was looking in at them with an undeniable air of success. "Get her out of that high chair, Pinkie. We found the cure."

Chapter Eight

Slipping out of her cloud cover, Rainbow Dash glanced around. Nopony around except a few school fillies playing down the street and somepony in a cloak taking in the shade. Nothing to be worried abou. Slipping into Twilight’s library, Rainbow Dash entered just behind Twilight herself. Glancing around, she took in the total chaos in the room, books and microscopes and equipment scattered everywhere. Twilight’s eyes were a bit bloodshot and her mane was frazzled, but she was grinning happily, and as they entered Zecora looked up from a cauldron she was stirring.

Rainbow gestured to her pacifier after a moment, having a question. Twilight removed it and, though she missed it’s presence for a moment, Rainbow Dash continued anyways. “How long is this gonna take?” She asked, happily. “Is it just a potion I can drink, or do you need to give me a shot or something?”

“Actually,” Twilight said, “We just need you to sniff some flowers.”

Rainbow Dash tilted her head, confused. “Wait, how?”

Glancing at Zecora, Twilight asked, “Do you want to tell her or should I?”

“It was your discovery,” Zecora insisted, shaking her head. “You should reveal the mystery.”

Grinning, Twilight turned her gaze back to Rainbow and gave her a satisfied look. “Well, when we we were cross-examining the data from when we had you strapped to my analyzation device,” she explained, “We noticed some abnormalities with the magical energies that were causing disruptions in the data. Once we accounted for an error margin, I was able to-”

“I don’t speak egghead,” Rainbow Dash pointed out, rolling her eyes. “Can you explain it to me like I’m five?” She blushed, thinking better of the expression after a moment, and added, “Or, uh, just like I don’t know what you’re talking about…”

Nodding, Twilight rephrased what she was saying. “Once we realized what was different about my readings, we were able to realize what was causing the effects. It’s just Poison Joke!”

Dash blinked a few times, considering that. It seemed so simple. Almost… too simple. “It’s… That easy? Really?”

“Well… No,” Twilight said, shaking her head a bit. “However you got it, it’s a lot more aggressive and intense than the kind we stumbled on in the forest. It’s probably a different subgenus, as can be compared to the difference between the Aesculus Hippocastanum and the Castanea Denta-”

“I get it,” Rainbow Dash said. “So, what, I just take a bubble bath?”

“The Poison Joke you ran into is too strong,” Twilight told her. “So you’ll have to get yourself afflicted with the more mild strain. It’ll act like a vaccine, flushing out the more intense strain, and then a bubble bath to wipe out the effects of the Everfree forest strain of the plant.”

Rainbow Dash was skeptical, but Twilight seemed confident enough. “Doesn’t that mean I won’t be able to fly? Last time I ran into this stuff, my wings didn’t respond to anything I tried to do in the air.”

Stepping in, Zecora put a hoof on Rainbow’s shoulder. “Be not afraid, Rainbow Dash, we’ll have you cured in a flash. Your wings will fail for but a second, then we’ll have you cured I reckon.”

A little reassured, Rainbow Dash asked Zecora, “How do you do that?”

“What do you mean?” Zecora asked, confused.

Rainbow raised an eyebrow at that, waiting a second. When Zecora didn’t say anything else she remarked, “Buck it, never mind.”

Frowning, Zecora said, “That was a little obscene.”

Spluttering, Rainbow Dash didn’t have time to say anything else before Twilight cut back in. “We’ve got some samples of Poison Joke,” she said. “Let’s have you get some on yourself, okay?”

“Right,” Rainbow Dash agreed. Eyes on the prize. “Let’s get this stupid, awful curse dealt with.”

…

Fifteen minutes later, and Rainbow Dash was sitting on the floor, waiting impatiently for the Poison Joke to kick in. Twilight insisted that it wouldn’t take long, and that as long as the Counter-Clothes Curse was still in effect, as soon as the new Poison Joke fought off the old strain, the blue crescent-moon sleeper would be forcefully removed from Rainbow’s body along with the the diaper.

“How much longer?” Rainbow Dash groaned, annoyed. “This is taking forever!”

Twilight sighed, checking the water temperature for the bubble bath they had already prepared. “Just a few more minutes, Rainbow, be patient. You’ve been waiting a few days for a cure, ten more minutes won’t kill you.”

“But I’m bored, and I just want to not be wearing stupid diapers again!” Rainbow whined, feeling restless. Knowing how close she was to having this whole scenario over with, she was feeling more and more anxious and eager to have it done.

Sighing, Twilight got to her hooves. “Here,” she said, shrugging. “Come tell me if this bathwater is too hot. At least it’s something to do while you wait.”

Rainbow Dash groaned in annoyance, but Twilight was right. It was something to do. Getting to her own hooves, the waddle in her hind legs barely noticeable anymore, she started to spread her wings partway to cross the room in one quick flap.

Her wings opened up fully.

Eyes going wide, Rainbow Dash realized with a slight delay that her wings were not responding the way she had intended them too. While she didn’t have time to puzzle together what this meant, she did quickly realize that instead of crossing the room in a quick flap of her wings, the new trajectory of flight was going to send her directly into the ceiling. Trying frantically to readjust, her wings flapped powerfully and she managed to veer off course only by a few degrees. Twilight didn’t even have time to call out or do anything as Rainbow Dash careened towards the window, hooves flailing in the air as she tried to stop. Glass shattered, and she crashed into the courtyard outside with a painful ‘Thump’.

Blushing bright red, Rainbow Dash looked around in terror. Nopony had been looking her way, but the sound of the crash was starting to draw looks, ponies peeking out of houses to see what had happened. The school fillies looked up from their game of jump rope, the cloaked pony looked up from her shady spot beneath the gazebo, and heads started peeking out to see what the issue was.

Direction wasn’t an issue, Rainbow Dash needed to escape. Wings responding or not, she could still get them to move. Trying to take to the sky, her wings reacted disjointedly, launching her straight up first, then out, careening away at breakneck speeds. She tried to take control, but it was like trying to operate a bicycle on stilts: awkward, nearly impossible to control accurately, and very strange to look at.

In lieu of a safe landing, then, Rainbow calculated a few angles on the fly and just stopped flapping, cutting the proverbial power to her wings. In seconds she started to drop, crashing mightily into an alleyway.

Perfect landing, she thought. Rubbing a bruised wing she brushed herself off, feeling good about the crash in spite of everything. She had managed to land somewhere totally out of view, where nopony would stumble upon her accidentally. Twilight may have been wrong, maybe the Poison Joke needed more time to fight off the new strain… Or was it the old strain? Zecora had seemed pretty confident in the cure, too, but as Rainbow tried to remember the explanation her head just started to hurt. If the old Poison Joke was supposed to go away, why were her wings not working when she still had one the stupid Sleeper? Wasn’t that supposed to fix everything?

Before she could puzzle it out, though, she heard hoofsteps and stepped further back into the alleyway, backing as far up as she could. Flying out wouldn’t be an option and the only other way out was running into the main street, so she just had to hope nopony would come this way.

The hoofsteps got louder, though, not quieter. “Uh… Heww-”

Right. Pacifier. Better not say anything.

Trying to stay as far back into the alley as possible, Rainbow finally saw the other pony walking by. She seemed… Familiar. And she was turning into the alley, headed straight for Rainbow.

“Hello, Rainbow Splash,” the Mare’s voice said. It was definitely a voice Rainbow Dash recognized, though she couldn’t remember from where.

“Wha’?” Rainbow Dash asked, confused. Looking more closely, she tried to see some memorable detail to figure out who this pony was. The cloak the mare was wearing had been dyed a dark blue or purple or black, something that blended into shadows well, which worked in the shady alley. She wore a large hat pulled over her face, concealing her identity further, but Rainbow knew she had seen this pony before nonetheless.

But… who?

“How foalish are you?” The mare commented, her tone one of condescension. “Rainbow Splash. You wet yourself, and it makes a splashing noise. It rhymes with your last name. Can you not even understand a simple pun?”

“Wha’?” Rainbow Dash asked again, before catching herself. The lisp from her pacifier didn’t seem important, but she found herself suckling it for comfort in between speaking. This situation was getting uncomfortable, fast. “I mea’, uh, who awe yah?”

“Oh, you don’t even remember me?” The mare asked. “Well, maybe the foal is just too tired. We’ll see how your memory works once you’ve had a nap.”

Rainbow was about to just ask ‘What’ again, but thought better of it. She wasn’t sure what to ask, the whole situation was getting to be a little baffling and she didn’t know where to begin trying to figure it out. Then, she saw the blue glow of unicorn magic lifting something from behind the mare’s cloak. It was a plastic ring spinning in the air, little toys dangling and moving around in a surprisingly fascinating pattern.

A… A mobile? Is that what it is called?

Mobile or otherwise, it was... almost... hypnotizing. Rainbow Dash tried to look away, but as it glowed with the unicorn Mare’s pink-purple magic, she couldn’t seem to draw her eyes away from the mobile. She tried to stammer a question as her eyes grew heavier and heavier, but all that came out was a sleepy babble. She tried to keep them open, to keep watching the incredible mobile, but before long there was nothing she could do to keep them open. Eyes sliding shut, she fell into a deep, deep sleep.

Chapter Nine: The Big Reveal

“Huztthwhwaathagoinon?” Rainbow Dash mumbled, rolling over in her crib and bumping her face against the bars. Blinking a few times as she suckled her pacifier, she tried to remember last night. Had she gotten drunk? No… She had…

Mobile. Pony. Something magic bad stuff.

“Mmm!” She yelped, sitting upright and banging her head against the roof of her crib. Everything went fuzzy for a second as she fell back, landing on a surprisingly soft pillow.

No, Rainbow Dash. Don’t panic! Think about what’s going on, you can figure it out.

Sitting up a little more slowly, Rainbow took stock of her situation. Adorable pink pacifier - check. Ugh. Diaper - Did it get even thicker? Freakin’ check. Clothes… Glancing down at them, Rainbow saw a pink dress with what seemed to be a quarter mile of white lace wrapped around it, poofing everything out with more frills than Rainbow could count. Lifting up the skirt to peek at her diaper, hoping that at the very least it would be uncovered, allowing for spanking-free changes, she saw a pair of pink plastic pants pulled over the poofy white padding. At least she didn’t need to use her diaper, as far as she could tell.

Okay, clothes’s taken account for.

“Jeeth, wathwi’ aww da pink?” She mumbled, annoyed.The room was too dark to see much, but Rainbow could definitely make out the painted pink bars of her crib, and  noted the mobile hanging from the lid of the crib. Averting her eyes for a moment, she quickly realized that it wasn’t spinning, and that she didn’t seem as fascinated as before.

Just as she was about to call for help, or at least call to see if anypony was there, a light came through the crack beneath the door and she heard hoofsteps approaching. Before calling out for help, though, she realized that it might be smarter to wait and see what happened. This could just as easily be the pony from before, and if that was the case Rainbow wouldn’t want to draw any attention to herself.

The door handle creaked for a moment, a purple glow making it turn until it slowly opened, lights flickering on to reveal the pony in the doorway…

“Wh-what da hay? TWIXIE?” Rainbow Dash asked, surprising nopony.

The Great and Powerful Trixie, dressed not in her stage costume but rather wearing only a saddlebag. She had obviously forgotten this, given the way she tried to flourish a cape that wasn’t there for a dramatic entrance. “No, it is I, The GREAT and POWERFUL… Oh, yes, it is I, Trixie. And you, Rainbow Splash, are mine!”

“Bu’... Why?” Rainbow asked, confused. “Why da’ heck did you wan’ me?”

“Oh, wouldn’t you like to know?” The Great and Powerful Trixie asked, smiling a sinister little grin. “Fine, Trixie shall tell you…I….

Rainbow leaned forward, eager to know.

“...didn’t,” Trixie finished.

“Uh…” Rainbow said, a little slack-jawed in confusion. If it had been possible, the pacifier probably would have tumbled out of her mouth. “Wha?”

“You were never Trixie’s target,” The Great and Powerful Trixie said, shrugging. “I meant for the poison to reach that no-good Twilight Sparkle… It seems your mail pony is too blind to read shipping labels, though, and so the expertly crafted poison Trixie left in a gift basket for Twilight Sparkle ended up being shipped to your home instead.”

Rainbow Dash blinked a few times at that, a few things clicking into place.

“But it’s fine, Trixie isn’t upset,” The Great and Powerful Trixie assured her, acting as if the pegasus really would have been worried about her. “It gave Trixie a little time to perfect the recipe as I… Experiment.” Her horn started to glow, and Rainbow Dash felt a little tug around her waist. The plastic pants were gently pulled by the magic.

Gulp!

“S-sthop!” Rainbow Dash yelped, quickly, waving her hooves in front of her waist to try and get Trixie to cut out the magic as she felt a pressure growing in her previously empty bowels. It seemed strange to Rainbow that she hadn’t felt the need to pee first, until she felt the spreading warmth on her crotch as the diaper grew wet.

The Great and Powerful Trixie’s magic persisted, though, and the unicorn laughed. “Why?” She asked. “Are you going to have an accident, Rainbow Splash?”

That pun doesn’t even make sense!

“N-nuh-uh!” Rainbow protested, unable to pronounce a solid ‘No’. Even as she said it, though, the tug of magic on the plastic pants made her cramp up, barely able to hold it.

“Then it shouldn’t matter if I stop!” Trixie said, eyes glowing a bit.

“P-pweathe!” Rainbow Dash whimpered, pressing her muzzle against the bars of the crib and giving Trixie and pleading look. “F-fine, I’m gonna have an athiden’, jus’ sthoppi’!”

The magic faltered, then cut out. “Hmmm…” She said, considering the pegasus trapped in the crib. “Trixie is feeling a bit merciful. You can either be let out of your crib and play for half an hour while I get breakfast ready, or-”

“D-dat one!” she interrupted, not even needing time to think about it, cutting Trixie off mid-word. Anything to keep from crapping her diapers again, since Celestia knew when Trixie would let her get changed.

The Great and Powerful Trixie glared at the intrusion on her offer. Horn glowing, the pacifier in Rainbow’s mouth glowed and then tripled in size, making Dashie’s cheeks puff out a bit and totally preventing speech.

“Mmm!” Rainbow protested, unable to close her mouth or stop the drool trickling down her muzzle.

“Much better,” The Great and Powerful Trixie said, nodding. “No more interruptions. As I was saying, I can let you play… Or, I can use a bit more magic, you load your diapers like a little foal, and then I give you half an hour of privacy in your crib. I’ll even turn off the foal monitor.”

Rainbow Dash almost turned down the second option out of hoof, wondering why it was even offered, until the implication struck her and her eyes went wide, pupils a tad dilated as the pieces fell into place. A reminder of how frustrated she was feeling made her seriously consider the option.

I mean, sure I’d have to mess myself, but it’d be fun. Besides, I’m gonna have to go eventually, right?

Right.

Wait, I’m not going to interject or put up a fight or anything?

Nah, I’m sick of arguing. Besides, messy diapers aren’t that bad.

Blushing, Rainbow came to her conclusion. She wiped a little drool off her chin as she nodded sheepishly.

The Great and Powerful Trixie laughed. “So, you’d rather sit around in a dirty diaper for half an hour than play in a clean one?”

Cheeks burning more furiously than ever, Rainbow Dash nodded, not really able to give a more clear answer than the yes-no type with the enlarged pacifier totally blocking off her mouth.

“No problem,” The Great and Powerful Trixie said, and her horn started to glow.

Rather than giving Rainbow Dash’s diaper a gentle tug, though, just enough to make her already pressurized bowels give in, Trixie hit the crinkly pink plastic pants with a magic blast strong enough to vaporize a small house. A fresh pair of plastic pants simply reappeared in their place, of course, but Rainbow’s eyes went wide as the force of the magical blast converted itself into a bowel-filling mudslide. Any control she may have had was totally obliterated and she hunched over, clutching her gut as the curse kicked into high gear. Grunting loudly into the pacifier, Rainbow’s diaper quickly filled with the mushy, mucky mess the magic had summoned. The padding swelled out, elastic expanding to keep everything in one place, plastic pants crinkling in response to all the motion.

Dashie’s weight pushed the mess up the back of the diaper, spreading it a bit as she continued grunting and meeping into the pacifier, rocking slightly as the contents of her gut slid into the back of the diaper. Bowels exhausted, the diaper was stained a light brown and swollen to a roundish smelly mass that reached past her knees and elevated her several inches off the mattress by the time she was done. At this point, the skirt was less covering the diaper and more resting atop it, the bulk of the swollen padding reducing the already scant concealment of her clothes to effectively nothing. She panted a bit, already feeling a tingling sensation in her spine just from putting her weight on the bulk of the mess, catching her breath.

So, naturally, The Great and Powerful Trixie sneered and her horn glowed as she hit the plastic pants again.

This time, Rainbow didn’t even have a chance to fight it. Her back end was too tired from trying to hold it before, and it was all she could do to whimper a bit and buckle as her bowels refilled to the brim and started depositing their contents into the mucky diaper. Moaning in simultaneous pleasure and discomfort as the overfull diaper squished against her, Rainbow Dash snorted shallow breaths through her nose, groaned, and grunted in reaction to the assault on her senses. Pleasure, discomfort, revulsion, and stinkiness were all fighting for top spot in her mental faculties as the second wave of magically induced desperation dissipated, her diaper now nearly the size of her torso as she sank into it, too drained of energy even to sit up.

Pleasure won.

Shifting her weight back to make the bulk of the diaper’s contents mush forward, Rainbow Dash felt a jolt of pleasure and sensation tingling up from between her legs as the messy muck smooshed around.

True to her word, The Great and Powerful Trixie backed out of the door, smirking evilly and cackling as she left Rainbow Dash with a modicum of privacy.

Seeing absolutely no reason to hold back, Rainbow Dash bunched up the frilly pink skirt so it wouldn’t get in the way of her hooves and jammed her hooves into the squishy diaper, pressing it against herself as she rocked her hips forward, moaning as loudly as the pacifier would allow as the mess squished against her thighs and between them. It felt fantastic, and Rainbow fell down onto her back, still rubbing her forehooves aggressively against the front of the diaper.

Using her hind legs, she thrust her waist upward and down, the ridiculously inflated diaper squishing against the crib’s mattress with a satisfying ‘crinkle’ as she did so, and Rainbow moaned again, a week’s worth of frustration all flooding out of her as she finally seized the opportunity to fulfill her suppressed desires. Spreading her hind legs a bit, she kept rubbing with her hooves to keep up the mushy pressure against her hindquarters, using one hoof to try and spread the mess forward so that there’d be more to smoosh against herself.

As frustrated as she had been, there was never a chance that she was going to need the whole half hour. Barely a minute had gone by before her back arced up in a wave of pleasure and she moaned as loud as ever into the enlarged pacifier, ecstasy rolling through Rainbow Dash as she collapsed back down on the mattress, exhausted despite all the sleep she’d had, post-coital bliss making her blink drowsily.

Hind legs a little tangled with all the bulk and padding, she rolled over and got comfortable. Whatever would come later would be fine, right now she felt great. Suckling a bit on the pacifier, she smiled and went back to sleep.

Chapter Ten

“Wakey~wakey~.”

Rainbow Dash managed not to jump up and hit her head this time, instead just sitting up a bit and grimacing at the squish she felt beneath her hindquarters as Trixie loomed over the crib With her libido sated, at least for the moment, the ‘ick’ factor was kicking in at full strength and she wrinkled her nose at the smell which had permeated the room.

Trixie’s horn glowed, and the pacifier in Rainbow’s mouth returned to a more normal size, at least relatively speaking. “Did you have a nice ‘nap’, Rainbow Spla-”

“Cu’ i’ ou wiffda stupid nickname!” Rainbow Dash groaned, glaring through the bars. “An’ wemme oudda hewe. I need ah chawnge.”

“How dare you interrupt me?” Trixie demanded, eyes narrowing in rage. She calmed herself with deep breaths, and shook her head. “No, no… If you want a change, I suppose I should oblige you.” Her eyes flashed, a wicked grin pulling up the corners of her mouth.

As Trixie lowered the side of the crib to let Rainbow Dash out, the pegasus finally realized why Trixie was so amused. She blanched a bit: There was no chance that Trixie would hold back on the spanking. Still, though… She wanted to get cleaned up, and it wasn’t like delaying would make Trixie go easier on her. Chewing the pacifier for a moment, Rainbow Dash nodded, trying to avoid eye contact with Trixie.

“Yeth, pweath…” She muttered, sulking a bit. Even without the prerequisite spanking she didn’t look forward to the return of the pins-and-needles tingling of a dry diaper, but she had a nagging reminder in the back of her head that staying in a dirty diaper for too long would have some uncomfortable side effects long-term.

Trixie grinned wickedly at Rainbow’s request, and as her horn began to glow. A stool slid up behind Trixie, giving her something to sit down on, Rainbow’s pacifier tumbled out of her mouth as the magic pulled it away, and a manebrush floated menacingly above Trixie’s horn as the unicorn sat, patting one knee and beaming with ever so slightly sadistic glee at her captive’s expression.

“D-do you really need the paddle?” Rainbow asked, moving her tongue over her teeth as the dry-mouth of not having a pacifier set in. She took a step back cautiously, not sure if she was willing to go through with the spanking after all.

“Nope,” Trixie said, her horn glowing a bit more, picking Rainbow Dash up bodily with a glow of magic and lifting her over, dropping the pegasus with little care for being gentle. “That’s just for fun.”

The magic kicking in made Rainbow Dash whimper and cross her legs as her bladder filled and then burst empty into the overfull diaper. It hardly made a difference at that point, but it still made her blush more heavily than ever. Embarrassment became a secondary concern a moment later, as Trixie floated the brush into her hoof and brought the back of it down in a sudden, thunderous strike.

The diaper was thick, sure, and it was full enough that there was quite a bit of mass between the improvised paddle and Rainbow’s flanks, but Trixie hit hard. Rainbow Dash cried out, yelping in pain. She wriggled on Trixie’s lap, but all Trixie did was smirk and hold her down with yet more magic, making her spasm a little as the diaper grew ever so slightly  wetter.

“Stop struggling,” Trixie advised, though she sounded like she didn’t much care as she brought the paddle down even harder than before, making Rainbow Dash yelp and squirm. “If you should fall off Trixie’s magnificent lap, you’ll have to start all over, and we’d hate for that to happen, wouldn’t we?”

Rainbow felt her eyes go wide as she realized the implied threat, and she quickly stammered, “N-no, please, I’ll stop!” That proved hard to do, though, as another hard spank came down and smooshed the lion’s share of her diaper’s contents against her flanks and between her thighs. Rainbow was physically exhausted from her little exercise that morning, but even so she felt a slight tingle of pleasure starting to burn underneath the pain and embarrassment all coming from her diaper.

“Sure, whatever you say,” Trixie said, wrinkling her nose as the paddle came down again. “Though, it seems unfair for you to have Trixie do all this work to clean up your repulsive behind without so much as a thank-you.”

Rainbow Dash blinked, realizing that the spanking had momentarily stopped. Her flanks were grateful for the reprieve, since she could only take so much of a beating before she broke down into real tears and that wasn’t something that Rainbow Daring, Danger, Diaper Dash would do. She wriggled a bit, the pleasant feeling of the mucky load in her diaper providing a little comfort, as she wondered what was taking Trixie so long.

“Uh… What’s up?” Rainbow Dash asked, after another second went by.

The eye-roll was nearly audible as Trixie said, “If you aren’t going to be grateful, then the Great and Powerful Trixie has much better things to be doing.”

“N-no!” Rainbow yelped. Even as nice as her full diaper felt, she knew that she needed a change… didn’t she? “Th-thank you, Trixie!”

“And what are you saying ‘Thank you’ for?”

Chewing her lip, wishing that the dry-mouth feeling would go away for a moment, Rainbow Dash blushed a bit and swallowed what remained of her pride.

“Thank you for spanking me so you can change my dirty diaper, Trixie…” She did her best not to groan in frustration at the words, sure that such a noise would render the thank you moot.

“That’s better,” Trixie said. A moment went by, long enough for Dash to wonder what was taking Trixie so long, and then without warning the spanking kicked into high gear.

As it slightly turns out, Rainbow Daring Danger slightly Diaper Drawn-out-middle-name Dash would cry, in front of Trixie no less. While it was impossible to see Rainbow Dash’s backside beneath the diaper and its stinky contents, if anypony with X-ray vision had been walking by, they’d have seen her blue behind gradually shifting into a pink and then a glowing red as the spankings continued, first ten, then twenty, and then Dashie lost count. It was somewhere in what felt like it had to be the hundreds, (Though it was more likely to be thirty or forty hard spanks,) that Rainbow’s watery eyes first shed a tear, and once the first one was out, it wasn’t much longer before she burst out into loud, foalish sobs.

Trixie, however, wasn’t going to give in just yet. She was enjoying this too much to quit just because her captive was sobbing like a newborn. Instead of letting up, she just paused for a moment to give Rainbow’s diaper a squeeze with her magic, making the pegasus squirm a little as she continued to cry, and making the lock on the plastic pants ‘Snap’ loudly as the clicked back on.

“Oh,” Trixie said, her voice deadpan and totally devoid of sympathy. “Oh my, I am so very sorry. It looks like I’ll have to start all over.”

Rainbow Dash barely heard Trixie over her own whimpers, but it registered that the spanking would need to keep going. Eyes jammed shut to try and at least slow down the tears, though it didn’t accomplish all too much.

By the time the spanking was done, the redness of Rainbow’s flanks was starting to show around the edges of the diaper, and she was starting to get dehydrated from all the crying. Trixie finally decided it was time to let up, mainly because her arm was getting tired, but let up she did.

A few moments went by as Rainbow Dash tried to gather herself. Wiping her nose, she started to turn to Trixie. Still feeling a bit vindictive, Trixie gave Rainbow Dash one last spank, making Dashie yelp and start crying again for another few moments. Then, without using magic, she unceremoniously pushed Rainbow Dash off her lap. “The great and powerful Trixie doesn’t want to carry you, and using my incredible magic would be foolish,” she said, getting to her hooves and wiping off her lap. “Unless you changed your mind,” she punned, “I suggest you climb up yourself.”

Blinking away tears, Rainbow Dash sniffled a bit but obeyed. She wasn’t about to let all that punishment to her backside go to waste. Climbing up on the changing table was a challenge, trying to use her wings was awkward and unresponsive, and physically climbing was difficult with a heavy load weighing down her backside, but she managed it after a moment. Rolling onto her back, she waited for Trixie to get the job done.

Smirking, Trixie approached the changing table and popped off the pink plastic pants wrapped around Rainbow’s diaper. It had been the only thing keeping the smushed and mangled diaper in any kind of shape, and as soon as the plastic pants were gone the battered padding immediately gave up the fight and practically fell apart. The tapes steadfastly held in place, what with the magic keeping them there, but the diaper would be about as effective at holding in an accident as a bucket with some holes punched in the bottom.

A quick spell to keep the smell away from her, and Trixie grabbed a tube of foal powder and wipes from beneath the changing table. Before she started, though, she stepped aside and her horn glowed for just a second.

“What was tha-” Rainbow Dash asked, leaning up a bit to look down and try and see what the magic had been. She was met with the bright flash of a camera taking a picture, the lens hidden somewhere across the room, but judging by the location of the flash somewhere at perfect angle to see her dirty diaper beneath the pointlessly short pink skirt of the dress. And, at the perfect angle to see Rainbow Dash’s face, looking almost straight at it after leaning up a bit. Rainbow blanched, and Trixie cackled with laughter.

“We wouldn’t want to be forgetting this, would we?” The unicorn asked, as she popped off the diaper’s tabs with a quick wave of magic. “Now, Trixie can show the pictures to everypony if you start causing trouble.”

Rainbow Dash gulped, and then the smell hit her. Even Trixie recoiled, despite the glow of magic around her nose muting the smell. As much as The Great and Powerful Trixie wanted to gloat, she moved quickly past the clean-up stage of the diaper change. Then came the foal powder, which had clearly been chosen for the odor:

Jeez, that smells about as perfumed as… Uh, a really strong perfume, Rainbow Dash thought, eloquently crafting a metaphor. Still, while the foal powder smell was a little embarrassing, it was still better than a dirty diaper smell.

Then, came the diaper. Trixie clearly wasn’t going for discretion or subtlety here: The garment she produced from beneath the changing table was easily as thick as two of the old diapers, with the lightning-bolt cutie mark on the crotch at least twenty percent larger and the padding around the crotch exponentially wider. Rainbow Dash blinked for a few moments, and then in spite of everything that had happened to her already, still found a little motivation to blush.

“I-is that really necessary?” She asked, closing her legs slightly in an attempt to keep the humongous diaper off for a moment.

Grinning, Trixie said, “The last diaper barely held together with the help of your plastic pants,” She explained, a wicked gleam of bemusement in her eyes. “Trixie wouldn’t want you to leak, after all.”

Not giving room for another complaint, she pushed Rainbow’s legs apart and slid the diaper into place. It took a bit of effort to get it just right, the extra bulk and padding making it a difficult process to tape the diaper into place properly, but Trixie got it after a moment.

Rainbow Dash quickly figured out why the padding around the crotch had been bulked out a bit: Once the diaper was in place, closing her legs even slightly became totally impossible. At the best, she could get them into a wide V shape, but walking would be out of the question as long as she was wearing one of Trixie’s diapers. The padding felt a bit firm at the crotch as she sat up, a awkward lump where Rainbow was expecting there to be soft, cushy diaper, but Dashie chalked that up to the fact that diapers clearly weren’t supposed to be that thick. Before she could ponder it long, though, the pins-and-needles feeling returned, and any lumpiness in the padding vanished from her perception.

“Now,” Trixie said, smiling widely and stepping to the side a bit. “Smile!”

Eyes going wide, Rainbow Dash didn’t have time to do much more than look at Trixie for a second in shock before the blinding light of the camera flash hit her again.

“Wouldn’t want to miss a second of this,” Trixie said, smiling at Rainbow’s deep blush as she raised a wing to cover her face. “Don’t be stupid, Lame-bow Dash,” she added, rolling her eyes. “The camera has already taken a photograph. Hiding your face just makes you look foolish…” She stopped for a second, considering it. “Actually, keep doing it, it fits you perfectly. Do you want something to eat?”

The non-sequitur took Rainbow a second to respond to. “Uh...Yes!” She said, nodding quickly as her stomach caught up and grumbled loudly. It had been quite a while since her last meal, and magic enhancement or no, using her diaper that much had left her pretty much empty.

“Excellent,” Trixie said. “Follow Trixie, and you can have breakfast.”

Hopping down from the changing table wasn’t too difficult, but once on the ground Rainbow Dash quickly realized her only mode of transportation would be to crawl. Her hind legs were splayed far too wide for anything else. Trixie seemed to know this, too, as the unicorn walked very slowly and looked over her shoulder a few times with a wide grin at Rainbow’s waggling behind, padding waving in the air as she tried to crawl as quickly as possible.

Once in the hallway, though, Rainbow Dash saw something, and despite everything, a streak of hope went through her. The door they had come through was almost dead in the middle of a wide hall. To the right, where Trixie was leading, a bathroom was on the far end, but before that the hallway opened up into an open room plan, a small kitchen on one side and a smaller living room on the other. Across from Rainbow’s nursery, a shut door, probably Trixie’s bedroom. But the other way, another door was at the end of the hall.

A door.

A door with a mail slot.

Trying to hide her smile wasn’t hard, Rainbow just had to think about her badly stinging flanks, but it was hope. A mail slot meant the door went to the outdoors. If she could just get away for a second, Rainbow Dash would be a home-free pony.

Then, they were in the kitchen. Even though crawling was slow, embarrassing, and displayed her over-thick diaper as well as a news crew could, the trip hadn’t exactly been long, and once there Trixie lifted Rainbow Dash into a high chair. No magic was needed, the chair was already high, had a tray, and was just the right size for a technicolor pegasus. There was still a click as the tray locked into place, but at the very least Rainbow’s arms were actually free, rather than pinned to her waist by the tray.

“So, what’s for breakfast?” Rainbow Dash asked, her stomach groaning loudly again as she tried to get comfortable in the high chair. The puffy padding of the diaper crinkled loudly and made sitting still difficult, so she kept wriggling and squirming as Trixie crossed to a cupboard, retrieving a jar of filly food.

“Strained peas,” Trixie said. Rainbow Dash gulped. “Do you prefer your formula cold or warm?”

“Cold,” Rainbow replied automatically, she could almost pretend it was milk when it was cold.

“Perfect,” Trixie said, retrieving a bottle of formula from the fridge and putting it on a hot plate. Her horn glowing with purple-blue magic as she floated the filly food over to Rainbow Dash, she smirked. “Open wide!”

Rainbow Dash knew the game at this point. If she opened her mouth to complain, a spoon of food would get jammed in her mouth and she’d have to swallow. But… A plan was forming.

“That sounds gross! Isn’t the- Glurp!” Rainbow made a swallowing noise, as the filly food was spooned into her mouth, making a bit of a mess around her face in the process. As she had suspected, strained peas tasted like puke, but that wasn’t an issue at the moment. She could deal with it, for a moment. “Ew!” She complained over a mouthful of food, wiping her mouth with a hoof. “Come on, plea-” She said, getting another mouthful of filly food. It was gross, too, but Trixie was enjoying herself plenty, which was perfect.

Before another spoonful could come in, Rainbow Dash’s trap sprung: She spat out the food, straight at Trixie’s face, making a raspberry as she did so. Trixie wanted an unruly foal? She’d get an unruly foal. Trixie spluttered and staggered back, giving Rainbow Dash the opening she needed to snatch the jar away, quickly getting what she needed and then tossing it to the floor. It shattered with a satisfying tinkle of broken glass (Well, it broke into a couple of pieces, not a lot, and it was really just plastic made to resemble glass,), and Rainbow Dash slid her hooves under the tray of the changing table and watched the show.

Trixie screamed in frustration, wiping filly food out of her eyes and glaring daggers at Rainbow Dash, who was smirking happily in her seat. Then, as she took a step forward, Trixie’s hoof slipped in the filly food on the floor and she went to the ground.

Coming back up, her mane a mess and filly food smeared everywhere, Trixie narrowed her eyes at Rainbow Dash with a cold fury that would have curdled milk.

Rainbow Dash stuck out her tongue and blew another raspberry. “Hah hah,” she teased. “You’re really bad at this.” Aggravating Trixie wasn’t part of the plan, it was just fun.

Of course, making someone angry when they’re in total control of the situation at hand isn’t always a good idea. Trixie stomped heavily to the cupboard, produced a large bowl, and then came out half a dozen jars of filly food in various flavors, all encasing in a blue glow of magic. One after another they all got dumped into the bowl: Carrots, more peas, peaches, banana, sweet potato, and asparagus. They all went in, and then came out a spoon to stir it all together.

“So Rainbow Splash wants to make a fuss?” Trixie growled, whirling back to Rainbow Dash with a snarl. “We’ll see how much fun you can have with this.”

Realizing her mistake, Rainbow gulped a bit. “Trixie, w-wait,” she started, forgetting the folly in talking as a spoon of the mush got shovelled into her mouth. She nearly gagged, except when she opened her mouth to make a choking noise, more of the filly food mixture got dumped in. Spitting it out got met with an invisible barrier of magic keeping the food in her mouth, giving Rainbow Dash no choice but to swallow. “We can-” Scoop. Blergh. Gulp. “Talk about-” Scoop. Aaaaaaaugh! “This!”

“Trixie tried to be nice,” Trixie snarled, furious and covered in filly food as she forced Rainbow Dash to keep swallowing the disgusting mush. “But nooooo, you had to take my generosity and use it to spit in my face. Literally.”

Rainbow Dash’s stammered was stifled by another scoop of filly food, making her gag, fail to spit out the mouthful, and swallow half-heartedly. And at this point, the bowl-ful of filly food had barely taken a dent.

…

Six jars of filly food and a bottle of formula later, and Rainbow Dash could barely move. Mostly because her swollen tummy was keeping her pinned in place more tightly than ever in the high chair, but still. Her hooves were still underneath the tray, and she was full enough that she just wanted to lie down for a week and take a nap, but now wasn’t the time for that. The formula had at least washed away most of the taste of the frankenfilly-food, but Rainbow still felt sluggish and tired. She only had one shot at this, though, so she had to take it.

Washing herself up at the sink, Trixie turned to glare at Rainbow Dash. “You’re lucky that Trixie is feeling merciful today,” she said, wiping her face off with a towel, all squeaky clean again. Rainbow’s face was still covered in filly food, but that wasn’t an issue. Freedom was close at hand. Crossing the room, she gave Rainbow’s back a few hard smacks, making the pegasus belch loudly, and then the tray on the high chair clicked. She was ‘Free’, as far as things went.

Plan goes in T-minus 10. 9.

Where’s that phrase come, anyways?

WHAT?

T-minus? What’s it stand for? Why not just say ‘Plan goes in ten seconds?’

Because… It’s… How they did it in the space movies.

Well that’s stupid, I’m not going to space, I’m-

She’s opening the tray! Shut up!

It was time to act. As Trixie raised the tray of the high chair to help Rainbow down, Rainbow played her ace in the hole: The hoof-ful of filly food she’d grabbed in the bedlum earlier came out, and as soon as her hoof was free, Rainbow Dash threw the pea-flavored muck right at Trixie’s face.

Direct hit.

Trixie shrieked as her face and eyes were once again splattered with mucky filly food, and she tripped backwards, giving Rainbow Dash the opportunity she needed to scramble out of the high chair. For good measure, she put her weight into throwing her knee into Trixie’s gut, too, to keep the unicorn down for as long as possible. Then, she turned herself around with a rearranging of hooves on kitchen tile, and flapped her wings.

It was true that Rainbow Dash’s wings weren’t exactly responding right, and her top speed on hoof was slowed to a crawl. Steering was impossible. Speed control was barely any better. But when flying down a straight, narrow corridor and maximum velocity, none of that matters. Her wings spread and she flapped forward as quick as she could, rocketing forward with the speed of a professional athlete.

It was maybe half a second before she slammed into the front door, coming to a harsh stop, just as planned. She reached for the handle, already tasting the freedom (Or was that the formula?) and…

Locked.

Gulp.

Hearing the shrieking Trixie getting to her hooves, Rainbow Dash looked at the door’s lock, but it needed a key, even from the inside. She tried the handle again, but the door didn’t budge. Footsteps approaching, Rainbow Dash tried simply battering the door down. She raised onto her hind legs, barely, and prepared to bring down the strongest kick she could right at where the handle met the doorframe.

The kick never made it. Right before she could, her tail was yanked and her hind legs were pulled out from under her. She pawed at the ground, trying to pull away, but an immensely strong magical pull dragged her backwards. Her bowels gave a tug at the magic, and as she tried to drag herself away from the magical pull, she felt a push beneath the waist and her diaper started to swell a bit.

The magic tug didn’t stop, though, as Trixie’s magic dragged Rainbow Dash halfway down the hall, the unicorn slowly stalking forward towards Rainbow to meet her in the middle. Trying to pull away with all her strength did absolutely nothing, but Rainbow Dash tried nonetheless.

The pull, dragging Rainbow Dash by her tail, shifted and started dragging her up instead, raising her padded behind in the air until she was hanging by her tail, upside down, eye-to-eye with a furious Trixie. Her bowels gave another shove as the magic refilled them, and her bladder was constantly leaking into the diaper, but the padding held for the time being.

Trixie didn’t shout, or scream, or protest, she just stared Rainbow Dash right in the eye and spoke so quietly that it was almost drowned out by the crinkling of Rainbow’s swelling diaper. “So that’s the way it’s going to be, huh?” She asked, eye-to-eye with the upside down Rainbow Dash.

Rainbow started to speak, but from nowhere a pacifier appeared in her mouth, the rubber end in her mouth large enough that her cheeks puffed out a bit and her speech was totally gagged. Trixie’s horn started to give off blue sparks from the effort of holding a pegasus upside down for so long, but she didn’t let up.

The contents of Rainbow’s diaper shifted a bit more as her exhausted bowels filled it a bit more, making Rainbow squirm and whimper into the pacifier.

Trixie continued. “Nobody. Nobody gets to trick Trixie. Ever.”

The blue sparks coming from her horn turned green-black, and she finally stopped the spell keeping Rainbow Dash upright… Instead, throwing Rainbow backwards at full force, the magical energy making Rainbow slam into the door and making the trickle coming from her bladder turn into a full stream for a moment. Miraculously, the diaper was still holding up extremely well, though it was full enough to reach below Rainbow’s knees without sagging at that point.

And Trixie wasn’t anywhere near done. Her horn glowed, and Rainbow Dash found herself briefly blinking out of existence for a moment, until the spell teleported her directly in front of Trixie again. The curse didn’t even have time to kick in, though, before another blast of magic teleported Rainbow Dash across the little hallway. The purpose was clear at this point: Cast as much magic as possible at Rainbow Dash, just to make her squirm.

One more teleportation spell, and Rainbow Dash was in front of Trixie again.The magic wasn’t blue at all anymore, it had fully gone green-black, and was starting to spread from Trixie’s horn in blobs of floating magical energy.

That’s when the combined force of three consecutive teleportation spells hit Rainbow Dash, and she doubled over as her bowels simply exploded into her diaper.

Worse, the curse had kicked back in full force when it came to making Rainbow Dash enjoy her diapers. Trixie just grinned wickedly as she watched Rainbow Dash collapse to the ground, cramping badly as she helplessly continued loading her diaper, and simultaneously moaning with pleasure into the pacifier as the sensation of the dirty diaper, still swelling between her legs, squashed up against her in all the right ways.

Poor Dashie wasn’t capable of coming up with much rational thought in the face of so much raw sensation and feeling, so she just gave in, not caring that Trixie was watching, not caring about much of anything. Moaning loudly enough that it was clearly audible through the pacifier, she forcefully shoved her forehooves into the front of the diaper, rubbing through the mess to smush and spread its contents against herself, moaning in pure ecstasy as waves of pleasure ran up her back.

Rolling on the floor, Rainbow Dash finally just collapsed into an exhausted heap in the hallways, her bowels finally empty, her libido too exhausted to act, and her stomach still spitefully full. (Which seemed a bit unfair, considering the circumstances.)

“I want to show you something,” Trixie said, leaning down to Rainbow’s eye level. Rainbow Dash was barely conscious, but some small part of her realized it might be a good idea not to doze off just yet. She wasn’t able to even crawl, much less stand, the diaper around her waist almost as large as she was after all that magic had made her fill it over and over, but as it turned out she didn’t need to move. Trixie opened the door across from the nursery, the one Rainbow had assumed had been leading into Trixie’s bedroom, but instead it looked like…

A lab. Not quite Twilight’s lab, but definitely a place where science could be conducted. A few black plants grew in the corner- No, blue plants, but underneath a blacklight. Strange tubes and beakers spiraled across a large desk, and sitting in the middle of the room was a single bottle sitting on a small display. It looked rather like a baby bottle, except baby bottles weren’t filled with black sludge that seemed to writhe in its container.

Naturally, Trixie walked right towards the bottle and held it up for Rainbow Dash to see. “Do you see this?” Trixie asked, her voice still very quiet. “This is what I’ve been working on. Concentrated humiliation. I used five drops, just five, on few choice items tucked into a Hearth’s Warming Eve gift basket. It was supposed to go to that stupid unicorn, Twilight Sparkle, but the idiotic mailpony must have screwed up the delivery, so you got it instead. The dose you got should wear off in a couple days, unless I keep on dosing your food. This bottle, though?” Trixie held the bottle up to Rainbow’s face, close enough where even in her bleary state it was totally unmistakeable. “It’s got enough juice to turn Princess Celestia into a whimpering infant for a thousand years. Skin contact would be enough to poison you for months. And if you dare try to escape again?” She leaned in as close as possible, eye-to-eye with Dashie, their faces inches apart. “I’m going to make you drink every. Last. Drop.”

Chapter Eleven

Rainbow Dash had been dropped (With magic, of course,) with her nose shoved in the corner of the room, and Trixie had warned her that moving an inch out of place would be severely punished. Then she’d gone to get cleaned up, turning out the lights and closing the door behind her, and it had been an approximate eternity since then, with nothing for Rainbow Dash to do but sit in the dark, suckle her pacifier, and try to avoid breathing in through her nose. Her belly still felt tight and uncomfortably full from the stuffing she’d gotten for breakfast, and she hadn’t gotten a chance to wipe her face off, but now really didn’t seem like a good time to be worrying about a few food bits on her face.

After ten minutes or so of pure boredom had gone by, Dashie had tried grinding the seat of her massively full diaper against the ground, but without moving her nose from the corner it wasn’t really possible to get much contact, and even with the incredible sensory boosts she got from the mucky mess she was sitting in, twenty minutes of rubbing her hindquarters against the ground only left Rainbow Dash more frustrated and bored than ever.

When the flickering purple light entered the room, it was impossible to miss in the otherwise total darkness. It was just a vague shining of purple on the wall, but Rainbow was immediately enthralled by it. It wasn’t Trixie’s magic, that was blue… Or black. What was with that?

Anyways, purple light. It wasn’t a lightbulb, it had to be… Magic?

Leaning back and wincing at the squelchy sound her diaper made, Rainbow Dash hesitated. Surely she wouldn’t get in that much trouble if she just glanced over her shoulder, right? But… Trixie wasn’t exactly acting fair, was she?

Would Trixie even be able to find out? Well… It was a risk she was willing to take. Glancing at the light, Rainbow Dash was visited by a purple spot of light floating in the middle of the room, flickering back and forth uncertainly, but trending towards Rainbow.

Magic! It had to be Twilight’s magic! If the spell had found her here, that meant that Twilight would be right behind it. And that meant rescue!

She started to stand up, to approach the little flickering ball of magic, but the mass of her diaper made her immediately fall backwards, landing in a sprawl with her legs pointed in the air. No problem though, Twilight’s magic would get her rescued soon enough.

Then, she heard Trixie’s hoofsteps and remembered that she would still have to stay in her good graces until a rescue came. Rainbow Dash tried to sit up, but the size of her diaper served as an extremely effective means to keep her totally incapacitated, and her struggles to stand up only got her more tangled up in the mushy tarpit that was taped around her waist. Purple magic flickering to inches in front of Rainbow’s face, she held her breath and hoped that Trixie wouldn’t be too upset.

The door opened, and as real, non-magical light flooded the room from the hallway, Rainbow Dash had to blink a few times before her eyes would adjust.

Trixie blinked a few times as well, glancing first at Rainbow Dash lying belly-up on the ground, wriggling in her diaper in a hopeless attempt to sit up, and then spotting the purple ball of light flickering above Rainbow’s face.

“Well, well, Trixie is gone for twenty minutes and Rainbow Splash has already gone and disobeyed orders,” she tsked, her horn glowing. It took a few black sparks and a second of effort, but then the purple magic started floating in the opposite direction, moving straight through the wall without any obstruction. “It seems that Twilight Sparkle is trying to find you,” she muttered, grinning a little. “I’ll let her search through the Everfree forest for a few hours. She’ll figure out that her magic was diverted eventually. Now, for you.”

Turning to face Rainbow Dash, Trixie made a clucking noise of disapproval with her tongue a couple times. Rainbow squirmed, but couldn’t so much as sit up with her mucky, messy diaper weighing her down. “You broke the rules,” Trixie announced. “But Trixie will be merciful. I’ll even let you play for a little while and then change your diaper, as long as you promise not to cause any more trouble.”

Her backside still a bit sore from the spanking that morning, Rainbow Dash was quick to start nodding. She knew Trixie could come up with some pretty awful punishments in a heartbeat, so she wasn’t about to argue. Unable to actually say anything in her defense, what with the oversized pacifier puffing out her cheeks and preventing speech, but nodding would suffice there.

“Oh,” Trixie said, her grin widening a bit. “And a spoonful of medicine. Trixie doesn’t want you getting sick, after all.” Her horn glowing, a spoon floated up from a workbench counter behind her. With surprising magical deftness, Trixie lifted the spoon and the bottle of black sludge and, in a smooth motion, dripped just two drops of the poison onto the spoon. “Open wide,” she ordered, the pacifier popping out of Rainbow’s mouth. “This should be good to keep you pacified for a few more days.”

Rainbow Dash would have struggled, fought, argued, but there really wasn’t much she could do. She kept her lips pressed together and moved her face away from the spoon, repulsed by the idea of being trapped by this curse for any more time than she already was, but Trixie just rolled her eyes.

“Do you want Trixie to make you open your mouth? I’m sure your diaper can get larger, I enchanted them myself,” she pointed out. “Now, are you going to take your medicine? Or should Trixie make it three drops?”

Gulping, Rainbow Dash opened her mouth to accept the spoonful of ‘Medicine’. As much as she hated it, Trixie was pretty much in control here. She felt a little tingle of magic on her tongue as the spoon floated in her mouth, but then it was quickly replaced by a sickly sweet taste of the black sludge quickly sliding down her throat. Grimacing she swallowed a few times to get the flavor out of her mouth, and by the time she looked back up at Trixie the unicorn had already moved on, and was now floating a pink teddy bear above Rainbow’s head.

“And now, if you’ll just play a bit while Trixie takes care of some work,” Trixie told her, leaving the teddy bear floating just out of Rainbow Dash’s reach. Rainbow clearly didn’t care, it was just a pink doll, not something she would have cared about even when she really was a foal. No big deal.

“What’s this supposed to be for? It’s just a dumb, stupid toy for foals.” Dashie asked, glancing skeptically between the doll and Trixie. “You don’t actually expect me to play with it, do you?”

Why’s the magic around it getting brighter, anyways?

“Trixie kept an eye on disasters around Ponyville after she was run out of town,” Trixie explained, focusing a bit, her tone a little more instructive. “Twilight Sparkle seems to have no qualms about using powerful magic to hurt her so-called ‘friends’, so I don’t see why I can’t use a few of her spells…”

Rainbow’s pupils suddenly dilated, and it had nothing to do with the light in the room. That doll… It was…

SO. COOL.

“Her want-it-need-it spell seemed like something worth learning,” Trixie explained, keeping the pink teddy bear floating above Rainbow Dash. “Enjoy.”

“The wha?” Rainbow asked, not really listening. Her mouth felt a little dry, she kind of wanted her pacifier back, but first she needed to get that teddy bear. Grabbing at it, she flailed for a moment, unable to quite grab it. “Hey! Gimme!”

“What was that?” Trixie asked, as she turned to her workdesk and turned on a light.  There was some kind of ‘Click’ noise, but that wasn’t important at the moment. “Does little Dashie want Trixie to give her the dumb, stupid toy for foals? So she can play with it?”

“Yes!” Rainbow said, waving her hooves and flapping her wings in an attempt to grab at the doll hovering just baaarely out of reach. With her hips and backside anchored to the ground by a diaper full of muck, though, she couldn’t manage it. “Please! Gimme that doll!”

It was just so awesome! And totally, completely cool! It was so great, it could only really be described with Italic letters! It had, uh… Pink fuzz all over it, and it was shaped like a bear, and it was… Just awesome! If it wasn’t for her stupid diaper, she would get ahold of that teddy bear and… Well, she’d get ahold of it, anyways. She could figure out the next bit later, she just knew that she wanted that doll. She needed it.

Squirming to try and sit up so she could grab the doll, all Rainbow Dash managed to do was wiggle her behind a little bit and shift the weight in her diaper around.

Trixie sighed, not even bothering to turn and look at Rainbow Dash pathetically trying to get the doll. “And why should Trixie give it to you, after you’ve been such a ungracious guest?”

“P-please!” Rainbow Dash stammered, feeling almost frantic to get the great toy being kept from her. “I-I’m sorry about earlier! J-just give me the stupid doll already!”

“So rude,” Trixie commented, returning back to whatever it was she was doing at her desk. “And it’s a stupid doll again? Do you want it or not?”

“YES!” Dashie whined, exasperated, as she continued trying to grab at the doll.

“Ask Trixie in a filly voice,” Trixie instructed, amusement in her tone.

“Pweathe, Twixie!” Rainbow Dash responded immediately. “Wemme have da tedsy beaw! I weawwy, weawwy wannit!”

“Now say how much of a little foal you are,” Trixie said, grinning over her shoulder for a second.

Rainbow Dash hesitated for barely a second. “I’m a widdwe fiwwy!” she declared, trying to put a little enthusiasm into the words.

Snickering, Trixie the Great and Powerful added in, “And how much do you love your diapers?”

“Wots and wots!” Rainbow Dash said, a little more quickly than she had been a moment before. It wasn’t too much of an exaggeration, especially when her diaper was all full and icky like it was at the moment, where a little rubbing with her hooves would do her better than a night with a Thoroughbred stallion. “My diapees awe weally gweat, especiawwy when, er…” She blushed, her common sense making her wonder how much she should really say to Trixie on the subject.

“Go on,” Trixie suggested, waving a hoof in a circular motion to tell Rainbow to continue.

“Dey’re especiawwy gweat when dey’we aww fuww,” Rainbow Dash finished, patting the front of her diaper to emphasize the point. All the messy diapers in the world weren’t any good without the doll still hovering just out of reach, though. “Gimme! Gimme!” She insisted, waving her hooves impotently at the teddy bear one more time.

“Fine, whatever you say,” Trixie said, and all the magic coursing through the doll cut out. It fell into Rainbow’s open hooves and she held it up in triumph… Right as the Want It Need It spell cut out, unfortunately for her and what dignity she had left.

“Oh…” Rainbow mumbled, her cheeks turning red with a powerful blush. “Right…”

There was a quiet ‘Click’ as Trixie stepped away from her desk, grinning broadly as her horn began glowing again, grabbing a paddle from the corner of the room. “Now, let’s get you out of that diaper before this office starts to stink that bad permanently.”

Rainbow Dash gulped, and the lights went out.

…

“Ow, ow, ow…” Rainbow muttered over her pacifier, rubbing the seat of her diaper with a wing to try and ease a little of the sting out of her flanks as she crawled behind Trixie. Obediently following her from place to place wasn’t what she wanted to be doing, exactly, but upsetting Trixie didn’t seem like a good idea. The numb feeling in her backside apparently didn’t extend so far as to actually numb her from pain, so the after-effects of another pelvis-shattering spanking kept her butt throbbing as she tried to keep up with the unicorn. On the bright side, her belly no longer felt full to bursting, and no diaper rash had set in yet.

“Tho whad awe yah’ doin’?” She asked, somewhere between anxiety and curiosity in her tone.

“Trixie has decided you need a new style,” Trixie explained. “Your mane style is just a little too mature for the girly little diaper filly look you’ve got going.

“Uhw…” Rainbow mumbled, not liking the sound of that. “Tho… you’we gonna…?”

“Trixie is thinking curls,” Trixie explained, smirking. “Lots and lots of curls. Sit down,” she added, gesturing to the living room floor now that they were approximately at their destination. “Maybe a perm. I’ll set it with magic, so it won’t wear away too quick.”

“M-magic? Weally?” Dashie asked, sighing a bit. Great. More dirty diapers were fine, more diaper changes would be less fun.

“Don’t worry,” Trixie reassured her. “Trixie will only be using a little magic on your mane, and the tissue is already dead. You won’t feel a thing. Sit. Down.”

Rainbow Dash sat down. She wasn’t about to risk getting in more trouble with the psycho unicorn, even if it meant a little hairdo. It wasn’t like anypony but Trixie would be seeing her, after all.

Turning her head a bit to see what was going on, Rainbow Dash caught a glimpse of something shiny and metal moving towards her. A mane curler. Great.

“T-tho,” Rainbow Dash asked, trying to make a little conversation to take her mind of the situation at hoof. “Wha’ exac’ly ith youw pwan, hewe?”

“What, do you expect Trixie to explain in detail what she intends to do, giving you a chance to foil her plot?” Trixie asked, condescension heavy in her tone.

Trying not to wince away at the feeling of something being done to her mane that wasn’t basic shampoo or a cheap barbershop trim, Rainbow sheepishly lisped, “Uh… I gueth tho…”

Trixie considered for a moment, and shrugged. “Well, it’s not like you can do anything about it,” she decided. “Trixie’s plan is so fool-proof, it’d take a genius to outwit it. Stop squirming!”

Rainbow Dash hadn’t actually realized she was squirming, but she stopped anyways, relaxing a bit. Her butt had stopped feeling so numb, or maybe she had just gotten used to it, but either way it was a plus.

“As Trixie was saying, it’s simple,” Trixie explained, horn glowing in waves as she worked on Rainbow’s mane. “You simply couldn’t take it if your shining reputation as a daring athlete got damaged now, could you?”

Rainbow Dash gulped, trying not to react too obviously to the threat.

“Lucky for you, though, Trixie doesn’t care what happens to pointless background ponies like you. All I care about is Twilight. And with a camera taking pretty pictures of everything happening to you and a threat to send those photos to the Foal Free Press, I’ll have her.” Trixie took a second to move some bobby pins into place, giving Rainbow Dash a chance to respond.

“You’ww neva gemme to turn on my fwiends!” Dashie protested, resisting the urge to shake her head as that would no doubt annoy Trixie. She settled for squirming a bit in her diaper, enjoying the feeling a bit more than she would ever admit.

Unnervingly, Trixie just chuckled. “Oh, you won’t have to. All of your friends are so charmingly loyal. I don’t have to blackmail you, just Twilight. I’ll send her all the pictures, and let her know that if she doesn’t show up by herself, those pictures go in the mail.”

Rainbow Dash gulped. That was a good plan. “Th-then, whadya need me fow?” She asked, wrinkling her nose. “You g-goddawl da pi- Pik- Pitc- bwackmail stuff ya need, doncha?”

“Fun,” Trixie said, grinning. “There, all done, now take a good look while I go get you a fresh diaper.” She spun a mirror around, showing Rainbow Dash a good portrait of herself.

It wasn’t much of a change from how she had looked before, big poofy diaper and pink dress, but the frills still wouldn’t have been so bad without the newfound curls added to her mane. She blushed at her own appearance, before what Trixie had said finally registered.

“Wha?” She asked, confused. “Budai don’ needa diapee change!” She protested.

“Don’t you?” Trixie asked, smirking over her shoulder at Rainbow Dash. “You’ve been stinking up the living room since I started fixing your hair, didn’t you notice?”

Confused, Rainbow Dash flipped up her skirt and glanced between her legs and finally saw that her diaper had started sagging. Blanching, she tried to remember having the accident, but she couldn’t. She just remembered having a clean diaper after Trixie cleaned her up, and then not having a clean diaper. Remembering the bit that came between, though…

“Aww, you didn’t even notice, did you?” Trixie asked, grinning more broadly than ever. “Well wasn’t that foalish of you? Incontinence isn’t a side effect of the magic, by the way. That’s all you.” A large paddle hovered above her head, and her grin grew large enough that it could have split off and survived on its own. “Well then. Let’s get you cleaned up.”

Chapter Twelve

“Just be quiet and don’t bother Trixie if you don’t want another spanking,” Trixie warned, not bothering to look at Rainbow Dash as she spoke.

Rainbow Dash crossed her forelegs and grumbled, sitting cross-legged in the corner of the room as she watched Trixie work. The showpony had changed into her stage costume for whatever reason, and her cape swirled and waved back and forth as she moved from one end of her workbench to the other. Mixing bits and things into a jar, she shook it up and then placed it over a beaker, letting it bubble until it darkened to a sinister black color.

Worried that it might be some other potion to make her debacle worse, Rainbow’s curiosity got the better of her and she asked, “Wh-wha awe you doin’?”

Glaring over her shoulder for a moment, Trixie turned back to her potion. “Trixie’s magic is incredible, but not limitless,” She said. “I need a pick-me-up for what’s in store. Teleporting idiotic pegasi across the hall is one thing, but I’ve got a little bit of a longer reach in mind this time.” She smirked, before pulling the potion off of the flame and tossing it back, drinking the whole thing in a couple gulps.

The change was only barely visible, but still plainly obvious nonetheless: Trixie shuddered a bit and seemed to grow invisibly stronger, without any apparent physical change. Her eyes flashed green, her horn seemed to spark black for a moment, and then she straightened with a broad smile.

“That’s better,” Trixie announced, smiling broadly to the room. “Now, hold still, this next spell is going to take a little precision and Trixie doesn’t want you ending up in Ponyville square.”

Swallowing, Rainbow Dash sat perfectly still. She didn’t want to end up teleported straight to Ponyville square either, knowing what the consequences of that magic would be.

“Oh, and just so you can’t try and argue once I’m done…” Trixie added, light flickering across her horn for a moment. Rainbow’s pacifier suddenly swelled, making her cheeks puff out a bit with discomfort as the bulge pushed them out.

Totally gagged again, Rainbow wasn’t able to ask any more pesky questions as Trixie narrowed her eyes, horn glowing in preparation. Judging by the glow and the clear sense of effort, this was going to be one whallop of a spell. Trying to sit still, always hard for her, Rainbow managed to keep her movements down to a few fidgets to deal with the numb feeling in her behind. Her diaper was uncomfortably dry, but she didn’t feel much like she had to go. Anyways, if Trixie was really going to hit her with the spell she was getting ready, it wouldn’t be long before Rainbow wouldn’t have to worry about a dry diaper anymore.

Closing her eyes, Rainbow Dash waited for the feeling of motion sickness that came with all her other teleportation spells, and the intense pressure in her bowels that would quickly turn into the grea- gross, ahem, feeling of a mucky diaper. Several seconds went by though, and still nothing. Unable to ask what was taking so long, Rainbow just peeked one eye open to look and see-

They had moved. She just hadn’t felt it. And they were…

On…

A…

Stage.

Rainbow Dash’s pupils shrunk to pinpoints and she fell backwards in a sudden scramble to back away, find some way to get behind a curtain or something, but her back just found a brick wall and no way to get out.

Taking a second to survey the scene, she saw everypony in the small crowd. Mostly, it wasn’t ponies she recognized, no ponyville residents at least. They were in some kind of indoor area, not large enough to be a theater, but without a bar or anypony serving food. A private showroom, probably, and with Trixie grandstanding to the audience. Rainbow was too distracted to listen to Trixie, too horrorstruck to focus properly. Her eyes darted frantically from the door, which was across the room and at the top of a flight of stairs, out of her reach, to the crowd which…

Oh Celestia, is that Spitfire? Spitfire is in the audience!

Sure enough, it looked like Spitfire was in the crowd laughing with everypony else at something Trixie had said. Finally, she looked at Trixie herself, who was gesturing straight at her.

Before she could try and figure out exactly what was happening, though, she felt a sudden cramp deep within her bowels. This came as a surprise, since she hadn’t been feeling any need to go in the slightest a second ago, and even if Trixie’s magic had filled her up, she wasn’t exactly trying to hold it. Wincing, she rocked forward as another cramp racked her, eliciting a groan of discomfort into her pacifier.

Ow ow ow o- Oh, crap...

She realized too late that her instincts were kicking in to try and fix the uncomfortable pressure: Tightening up, her body was pushing to relieve some of the pressure and damn the laughing crowd. Blushing in preparation for how the crowd would react, she waited for the mucky feeling of the seat of her diaper filling with crap. Seconds went by.

Nothing happened.

In spite of her body’s attempt to relieve some of the pressure, moments went by and all she felt was another, even more intense cramp that made her rock forward and clutch her stomach again.

Looking to Trixie in a panic, Rainbow Dash tried to figure out what was going on with little success. She didn’t know what she would say even if her pacifier wasn’t keeping her thoroughly gagged, but nonetheless she looked around and finally to Trixie again with a confused expression on her face, trying to solve the puzzle of what the heck was going on. That’s when she finally started listening to what Trixie was saying.

“Oh, it looks like she’s coming around, everypony!” Trixie called, apparently having noticed Rainbow’s confused looks. “Isn’t she adorable? As promised, I’ll prove without a doubt that I can hypnotize anypony with just a wave of my hoof! You’re all familiar with Rainbow Dash’s history, Trixie presumes?”

A chorus of agreement came up from the crowd as Rainbow Dash started spotting more familiar faces. Not just Spitfire, but several other higher-ups in the Canterlot sports scene, many of whom she’d sent application letters or fan mail too. In fact, the more she looked, the more familiar faces seemed to appear in the crowd.

“Well then, you’d know she’d never just agree to any of this,” Trixie called, grinning as she turned towards Rainbow Dash and waving her forehooves in some kind of strange pattern. “Now, Rainbow Dash, when I snap my hoof you’ll wet your diaper, alright?”

Rainbow shook her head, mortified at the idea of being in a wet diaper in front of everypony here. Admittedly, she was surprised she hadn’t used her diaper already what with the barely tolerable need she was feeling to go, but that didn’t mean she wanted to go in front of this crowd one way or the other.

And yet, she suddenly felt the pressure on her bladder vanish as soon as Trixie snapped a hoof against the ground, and as she looked down between her legs she realized to her horror that, just as Trixie had predicted, there was a growing yellow stain growing on the front of her diaper, plainly visible to the whole crowd underneath the tiny skirt of her outfit.

Relaxing visibly as the numbness in her behind dissipated, Rainbow sighed in relief. The pressure in her gut was still growing painful, but at least her diaper was comfortably wet.

The pieces fell together as Rainbow Dash felt her diaper squish beneath her. The unicorn hadn’t used any sort of magic or hypnosis to make Rainbow wet her diaper, she had been using magic to keep Rainbow from going and had finally cut out the spell when she said she was using hypnosis. That also explained the steadily growing pressure at Rainbow’s backdoor: If magic was keeping her from using her diaper, it’d be having the opposite effect all at the same time.

Squirming uncomfortably, producing a squishy crinkle from her diaper, Rainbow snapped back into reality as she heard the sounds of laughter echoing through the room. Blushing profusely, she tried all at once to cover up her diaper with one hoof while hiding her face with the other, as though that would actually solve anything.

“Isn’t Rainbow Dash simply adorable?” Trixie said loudly to the audience, projecting her voice with the trained but not overwhelming volume of a talented thespian. “But wait until you see Trixie’s next trick! Even grown mares still might have a little wet accident once in a while, maybe if they’ve had too much to drink, or if they haven’t had a chance to go in a while. While it’s unlikely, it’s entirely possible that Trixie’s incredible hypnosis wasn’t what led cute little Rainbow to end up in soggy diapers, right?”

Basking in the murmurs of agreement, Trixie played up to the crowd’s expectations. “Of course, all of you know what only little foals do, right?” This got whoops and cheers of amused agreement, egging on the show. Rainbow Dash whimpered into her pacifier, knowing where this was going and praying that anything would happen, any saving grace to keep her from loading her diapers in front of this crowd, especially knowing what... other effects the messy diaper would bring out in her.

“Still, Trixie will give you a little chance,” Trixie announced, speaking more to the audience than to Rainbow Dash. “When I snap my hoof, you’ll be unable to take your diaper off,” she said. “But, if you manage to take it off anyways, the show’ll be over and I’ll have to come up with something to impress the crowds.” Smirking over her shoulder at Rainbow with an expression that made it totally clear she knew exactly what she was doing, Trixie raised up her hoof and gave it a snap.

“Trixie will give you a moment, and then we’ll move along,” Trixie said, grinning broadly.

Even as desperate as Rainbow was to relieve the pressure that was still growing inside her, making every action a struggle as cramps and discomfort kept her from reacting as quickly as she would like, Rainbow still wasn’t eager to crap herself on a stage for all the higher ups in Equestrian sports to see. Despite knowing that it’d be impossible, Rainbow nonetheless pulled up her skirt and pawed at the plastic panties keeping her diaper snugly in place.

It was a hopeless effort, as was plainly apparent to everypony in the audience. She tugged at the plastic, tried undoing the plastic snaps keeping it tightly in place, attempted stretching and yanking at the panties, but just like every other time she had tried, nothing much happened beyond inciting more laughter from the audience.

After half a minute of Rainbow’s useless attempts, Trixie finally stepped back in, drawing the eye of the audience back to her. “Well then, I think it’s all pretty apparent what’s going to happen next,” she said. “Audience members with a sensitive nose are advised, clothespins are for sale in the back, this next moment might get a little smelly. Rainbow Dash!” Whirling back to the pegasus who was currently cramping and bowed forward in discomfort, Trixie pressed on with her performance. “When I clap my hooves together, you’re going to mess your diapers like a newborn foal with no control. And,” She glanced at the audience, mugging to get the right effect. “You are going to love it.”

Rainbow Dash gulped, glancing between Trixie and the crowd, shaking her head no in a silent plea. She felt like she was going to explode if Trixie didn’t let up on the magic soon, but she’d rather go anywhere else in Equestria than on that stage.

Unfortunately, it didn’t look like she was anywhere else in Equestria, and by all apparent measurements she was on that stage, and Trixie wasn’t about to let up. Raising her hooves to clap them together, Trixie let up on the magic keeping Rainbow’s diaper clean.

Rainbow’s bowels exploded into her diaper, and the crowd exploded with laughter. Leaning forward and having to do very little to facilitate the release of pressure, Rainbow Dash grunted and whimpered as her diaper quickly filled, actually raising her up a bit on the stage as the newfound mass propped her up a bit more than the empty diaper had. And just as Trixie had predicted, it felt great.

In that moment, despite the jeering and laughs coming from the arranged crowd of somewhat recognizable faces, despite the humiliation of the scene, Rainbow’s magically induced lust led her to ignore all that and give into the overwhelming pleasure of a recently filled diaper. Using both hooves to energetically start-

“Now, now,” Trixie said, pulling Rainbow’s hooves away with a bit of telekinesis, preventing her from indulging. “We’re in public, and I don’t have the license for that kind of show.” Winking at the crowd as Rainbow Dash desperately tugged at the magic keeping her hooves away from her diaper, Trixie added, “Didn’t I tell you that she’d love it?”

Hoots and hollers came from the audience, the voices too nonspecific to tell exactly who was cheering and who was laughing, but behind the diaper-fueled lust Rainbow Dash felt a tinge of reality start to color her thoughts again, the remaining bits of her rational mind realizing that she was fighting against magical restraints so that she could (very) publicly jill off into an overly messy diaper. Her cheeks turning a bright red to match bits of her mane, she nonetheless kept tugging against the magical restraints to try and do something to satiate the desires she was feeling.

Laughing in a knowing, parental fashion, Trixie said, “Well, folks, it looks like I should take the little one home before she gives my show an R rating.” The crowd laughed, and Trixie beamed. “Wave goodbye, Rainbow Dash!” She said then, using the magic already holding Rainbow’s hooves in the air to make her wave one foreleg back and forth in a wave before, finally, letting up the illusion and letting her workshop float back into view.

Of course, from Rainbow’s perspective they just reappeared in the workshop just like they’d left it, plus a full diaper and minus most of Dashie’s remaining dignity.

“Now, Trixie needs to get some work done,” Trixie said, as she turned off the camera and slipped the tape into a cream-colored package along with a folder and a few other tapes. “So if you’d just take a nap and let me deal with it, that’d be great.”

Rainbow Dash didn’t know how she was expected to sleep, until Trixie raised a foal mobile into the air, rotating it with a bit of magic. With barely enough time to recognize the curse kicking in and making her drowsy, Rainbow sagged sleepily, yawned once, and then fell asleep.

Chapter Thirteen

“Have you tried… This tracking spell?” Pinkie Pie asked, poking her hoof at a list of directions jotted down in one of a dozen spellbooks scattered on the library floor.

Glancing over at the book, Twilight shook her head. “That’s for tracking down the missing sock in a pair,” she chided, sounding a little tired. They’d been trying to find a working tracking spell for over a day, trying to figure out where Rainbow Dash had gone too. All her spells had left her with an effect somewhere between total failure, flickering out after moments, or leading them to various swamps in the Everfree Forest. Twilight had begun to worry if it had been a foalnapping, not just some kind of curse-related mishap.

“How about… this one?” Pinkie asked, holding up another book.

“We tried that, Pinkie,” Twilight reminded her. “Attempt number three.”

“Oh,” Pinkie Pie’s face fell a bit as she remembered. “Well… Maybe somepony around town has seen her?”

“Fluttershy and Rarity are looking the old-fashioned way,” Twilight said. “I don’t know how much more help we’d be able to offer.” Sighing, she put down the book she had been reading through for the third time and looked up at the ceiling with more than a little bit of hopelessness creeping into her thoughts.

“Maybe we should take five and come back at this from a fresh perspective,” she recommended, closing the book and hovering it towards the shelf. “Do you want anything to drink? I think I’ve got-”

A knock came at the door, interrupting her words. Tilting her head slightly, she walked up to the door and answered it, seeing a mailpony she didn’t recognize holding a thick manilla envelope.

“Special Delivery,” he said, holding out a pen and pad for Twilight to sign.

Accepting it, Twilight asked, “Where’s the usual pony? She didn’t get hurt, did she?” She always worried that their usual mailpony wouldn’t see some obstacle and would land herself in a hospital somewhere.

“No, it’s just a special order,” the new pony said, taking back the pad. “Express speed.”

“Well, it sure got here… speedily?” Twilight said, a little unsure what else to say. “Thanks!”

“Have a nice day, ma’am.”

Closing the door, Twilight walked back towards the pile of books in the center of the library, tearing the end of the package neatly open and sliding out the contents to look over what the package might be.

“What’s that you’ve got there?” Pinkie asked, glancing over Twilight’s shoulder. “Is that- Eww!”

The picture that slid out the envelope was… Not suitable for a young audience. Rainbow Dash was wearing a really full diaper, her forehooves clearly rubbing against the front of its plastic cover in a way that left little to the imagination. Frowning and blushing towards the photo, Twilight glanced at what else was in the package. More pictures. Lots of them. Rainbow Dash in a crib, Rainbow Dash trying to snatch a teddy bear out of the air, Rainbow Dash crying on some kind of stage. A thick stack of pictures of Rainbow Dash in myriad humiliating and compromising situations.

Feeling more than a little uncomfortable looking at all those pictures, Twilight brushed them aside and flipped them over, looking at what else was in the package. A sheet of paper slipped out, with a note written, or at least arranged, out of old magazine clippings.

“Twilight,” Twilight read aloud, scanning the note. “I have Rainbow Dash held captive. If you don’t want these pictures of her shown to everypony in Ponyville, follow the contained map. Come wearing a diaper.” Glancing down further on the note, Twilight added, “P dot S, you’ll need it.” Beneath that, “P dot S dot S, make sure it’s store-bought, no magic ones.” And, finally at the very bottom of the paper, P dot S dot S dot S, come alone.”

“What’s that all about?” Pinkie asked, as Twilight pulled the map out of the envelope.

“It looks like someone’s got a problem with me,” Twilight said, frowning over the directions. “This looks like it should be easy to find. I can head over there right now and get this whole mess sorted out.”

“Doesn’t the note say to wear a diaper?” Pinkie asked, tilting her head.

Twilight blushed. “Well- Yes, but… It’s not like I’m actually going to let whoever this is get away with it.”

“What if they have a way to send out the pictures the moment they see you aren’t doing what the note said?” Pinkie asked, sounding concerned.

“Er... Oh, ponyfeathers. You’re right,” Twilight admitted. She simply wasn’t too excited about the idea of dressing up in diapers, or even being seen buying them, but it was for Rainbow’s sake. Clearing up the pictures back into the package and setting it by the door, Twilight glanced around to make sure she wasn’t forgetting anything.

“Well… I guess I’m going shopping,” she said, shrugging sheepishly to Pinkie Pie. “You stay here, in case I get any more mail or the others show up with news.”

“Roger!” Pinkie said, slapping a hoof to her forehead in a mock salute. “I’ll keep an eye out! Good luck!”

“Thanks,” Twilight said, before stepping a hoof outside to head to the store.

…

“Um… Can I help you, ma’am?” A squeaky voice came from behind Twilight, making her jump a few inches in the air and turn red-faced to see the teenaged pony with a red polo uniform and bad acne.

Twilight had been standing in the incontinence aisle for about ten minutes, staring at the inordinately large selection of diapers in front of her. Maximum absorbency, total protection, 24/7, all night protection, for mares, for stallions, uni, all in a half dozen sizes, colors, and designs. She hadn’t known what to get. With Rainbow Dash it had been easy: Basic summoning spell, and whatever magic had fueled her curse had seemed to make the diapers fit just right. For *herself*, though, she didn’t know what in the hay she was supposed to buy. And now a sales associate was asking to give her a hoof.

“Uh…” Twilight said. “Er… Well…” Gulping, she decided there was no time like the present to swallow her pride and ask for help. “I need to buy, some… uh… diapers. For somepony else!” She added, quickly, thinking up a likely excuse. “Yeah, somepony else who’s about my size. Y’know, for reference.”

“Right,” The teenage pony said, raising her eyebrow skeptically. “This… Other pony who looks exactly like you, what’s she need ‘em for?”

Biting her lip, Twilight considered it. The note hadn’t really said, except ‘You’ll need it!’ “Well, uh… Diaperey things? I guess?” She offered, hoping the explanation would be satisfying enough.

“Sure,” the sales associate said, glancing up at the shelf, back at Twilight’s backside for reference, then back up at the shelf. “Okay, here, these’ll do,” she said, taking a step forward and reaching up to grab a large pack of diapers labeled ‘ULTRA - TOTAL GARMENT PROTECTION’ in extremely large caps. A picture of the diaper suspended in the air was on the front, showing a garment thick enough to legally qualify as a pillow in some counties. The bulky squareish padding protruded from the diaper, with the tapes looking like they were strong enough to hold up to just about anything.

Squeaking, Twilight said, “B-but, they’re so… Do they really need to be that thick?”

“Hey,” the teenage assistant said in a placating manner. “You don’t want your ‘Friend’ to have any problems, do you? Better safe than sorry.” She smiled, making Twilight secretly wonder if her lie about the friend hadn’t been totally believed.

“Sure, right,” Twilight said. “And, uh, is there a bathroom here I can use? To… make sure they fit?” She asked.

“Just past the registers, the left of the doors,” the pony said, shrugging as she turned to walk away.

“Right,” Twilight said, glancing at her hooves for a second and then turning to the register.

There was no good way to carry the huge pack of diapers without being ridiculously obvious about it, but Twilight gave it a try anyways, holding the package behind her back in hopes that she might conceal a bit of the label, at least.

Seeing the line at the register then, Twilight gulped. There was no way she’d be able to wait in a line that long without somepony seeing, and she would have a hard time explaining her story about another pony of exactly the same size as her to everypony in line.

That’s when she saw the self checkout line. Perfect! She could just slip through, not have to deal with anypony, and be changed into one and on to save Rainbow Dash in no time. Trotting over to the machine, she set the package of diapers on the counter to scan it.

“Er…” she said to herself, looking at the buttons available. “I guess… This one?” Pressing her hoof to a button, the machine beeped and a little screen display popped in big block letters.

PLEASE SCAN CUSTOMER CARD

‘Hmm’ing, Twilight then hit the ‘Cancel’ button, looking around cautiously to make sure nopony was watching.

PLEASE SCAN ITEM

“Perfect!” This was going to be easy! Sliding the bulky package of diapers over the checkout, Twilight heard the machine beep once, then twice.

ITEM NOT SCANNED. PLEASE RESCAN.

Frowning, Twilight moved the package back and forth again. Beep. Beep.

PLEASE MAKE SURE BAGGING AREA IS CLEAR.

Grumbling, Twilight tried again. Beep beep!

ITEM NOT SCANNED. PLEASE RESCAN.

Again. Beep. Friggin’. Beep.

ITEM TOO LARGE. PLEASE WAIT FOR ASSOCIATE.

About to scream in frustration, Twilight finally looked up from the little screen, realizing only then that the repeated beeps from the machine had drawn more than a few stares. Blushing, she looked back at the package of diapers, then at the many, many staring ponies.

“Er… it’s for a friend?” She offered, weakly, just as the pony who’d assisted her earlier walked up.

Taking one glance at the situation, the teenage pony rolled her eyes. “Yeah, you’re gonna need to go through the regular lane for that,” she said. “It’s too big for the self-checkout.”

Blushing even more, Twilight said, “U-uh, oh, right…”

Grabbing the package, she shifted over to the lane that looked the shortest, trying to ignore what felt like literally everypony in the building staring at her.

Shuffling interminably forward as the line progressed, barely, Twilight tried explaining her story to the older pony in front of her in line.

“Of course, sweetie,” The elderly mare said, after hearing the stammered explanation. Smiling knowingly, she added with a wink, “I know her, she’s the one who needs my glasses.”

“No, but-” Twilight added, but then the nice old mare had checked out and was trotting out the door, leaving Twilight at the checkout.

“Do you have a rewards card?” The cashier asked, a pegasus stallion only a few years older than the teenager who’d helped Twilight before.

“N-no,” Twilight said, avoiding eye contact.

“Will you need a bag for that?”

“Y-yes please…”

“That’ll be twelve bits.”

Twilight froze, realizing a sudden problem. In her hurry to leave, she’d forgotten to bring money.

“U-uh…” She said, blanking on what to say.

“If you have a store card, that works too.”

“Uh…”

Twilight wasn’t about to go through this whole ordeal again. Besides, it was for Rainbow Dash.

“Ma’am? How are you going to pay?”

“Sorry about this!” Twilight shouted, grabbing the package of diapers and kicking over a stand of candy bars behind her to make a distraction. Before anypony could react, she was sprinting out the door with her diapers in tow.

Twilight Sparkle certainly wasn’t an athlete. She wasn’t anything next to Rainbow Dash, and Applejack would almost always beat her in a footrace so long as she wasn’t distracted with petty arguing. Even Pinkie Pie, almost constant eater of sugar and sweets, was probably more athletic than Twilight.

That all being said, Twilight could have won the 500 Meter Dash at the Equestria Games at that moment for how fast she was running. She knew Sugarcube corner was only a couple blocks away, so that’d be her refuge.

Trying to avoid thinking about all the attention she was probably attracting, Twilight sped like a racecar jet falcon bullet down the road, a purple blur followed just behind by a crinkly white blur. Reaching Sugarcube corner in record time, she skidded to a halt in front of Mrs. Cake.

“N-no time to explain!” Twilight told her, breathing heavily. “It’s an emergency! Where’s your bathroom?”

A second went by, and Twilight found herself blushing again. “Okay, that was a poor choice of words, but-”

“Right over there, dear,” Mrs. Cake said, unphased. Twilight nodded, sprinting past other customers and skidding into the bathroom as quick as she could.

And then she had to actually put on a diaper.

With Rainbow Dash, it had been pretty darn easy. She could see everything she was doing very clearly, the magic of the curse seemed to be helping things along, and the diaper hadn’t been quite so… enormous.

Lying down on the floor and looking between her legs, Twilight grabbed a diaper from the pack and unfolded it, looking up at it floating in the air and trying to figure out how she’d get it on. It was best just to go for it, she decided, so without further delay she waved her horn a bit, the purple glow of her magic slid it between her legs, and she reached for the tapes.

“What the…?” She muttered, looking up, confused. The tapes weren’t there! They were… “Oh,” She said, blushing a bit in spite of the fact that there was nobody to see her embarrassment. Flipping the diaper over so that the tapes were on the right side, she pulled it up in place again and yanked up the tapes, sticking them on snugly.

“There! All good,” Twilight announced, again to nobody in particular. Sitting up, she pushed herself to her hooves, took a step forward, and immediately slipped and landed back on her rump as the awkward bulk of the diaper kept her legs spread apart.

Trying again, she managed this time to shakily keep her balance, lifting up the pack of diapers and head outside. Walking through Sugarcube Corner in padding wouldn’t be fun, but after that she could hurry to get where she was going and have this whole ordeal over with.

She swung the door open, and saw Lieutenant Jam Sandwich, the local PPD officer who usually got all the legwork done. She was a little short, with an orange mane and white coat, but in full uniform and wearing a taser she looked plenty intimidating.

“Ma’am, you’re gonna need to come with me and answer a few questions,” The policemare said, in a flat voice.

Twilight gulped.

Chapter Fourteen: The Stunning Conclusion

“Alright, miss, you’re free to go,” one of the prison guards said, sliding the gate open to let Twilight out. It had been about an hour since she was locked up, so Twilight hadn’t needed the bathroom just yet, and her pacing hadn’t quite started to wear a groove in the floor. “Since you offered to pay for the damages, the shop owner isn’t pressing any charges. Just make sure to show up and pay your fine.”

Glad that this plot thread hadn’t gone on any longer, Twilight quickly nodded and turned from her pacing to waddle towards the opened gate. She hadn’t just been pacing to think: It had been a lot of good practice walking with a bulky diaper on. In fact, if it weren’t for the incredibly visible diaper taped around her waist, you’d barely be able to tell there was anything upsetting her stride. She hadn’t wanted to keep wearing her diaper when she got locked up, but since the package with the rest had been locked up in evidence and she didn’t want to try heading back to the store, she hadn’t had much choice.

All that aside, though, she was out of prison and back on her way towards saving Rainbow Dash.

…

Humming happily, Trixie was surprised that she felt almost… giddy. It had been years since she felt so excited about something. In hours, maybe even less time, Twilight would be there, pre-packaged and all ready for The Great and Powerful Trixie’s revenge. Finally, after all the buildup, practice, experimentation, and effort put into this setup, she’d finally get back at the upstart Twilight Sparkle for ruining her career.

Peeking in at Rainbow Dash, snoozing in her crib, not concerned in the slightest about the overfull diaper taped around the her waist, Trixie smiled. Sure, it wasn’t ideal that she’d have to take care of two captives, but at least Twilight would have a playmate in her humiliation. Closing the door before the light woke Rainbow up, Trixie headed back to her lab to clean up and make sure everything was in order.

…

“Wha-?” Rainbow Dash mumbled, peeking awake as she heard a door closing. Wrinkling her nose, she glanced between her legs and saw her diaper, feeling a mixed tingling of pleasure and discomfort as she realized with some horror that diaper rash was setting in.

Glancing up at the ceiling, something incredible caught her eye. The foal mobile hanging above the crib was almost… hypnoti…

Zzzzzzzzzzzz….

…

KNOCK. KNOCK. KNOCK.

…

“Well, let’s get to the bottom of this,” Twilight muttered.

I wonder who’s inside?

…

“Excellent,” Trixie said. “Twilight is here.”

…

Glancing around anxiously, Twilight snapped her head back to the door as she heard the door’s deadbolt flick. The hinges barely made a sound as the door swung open, revealing none other than Trixie, the Great and Powerful.

“Trixie?” Twilight said, before a few things clicked into place and her brain caught up. “Where is Rainbow Dash?”

Smirking wickedly, Trixie said, “Oh, Rainbow Splash is fine,” she said, using her showpony’s voice. “Come inside Twilight Sparkle.”

“... Splash?” Twilight asked, tilting her head.

Pausing, Trixie sighed in exasperation. “It’s a pun. You see, she- Never mind.” Her horn glowed for a moment and she yanked Twilight inside, slamming the door.

“Hey!” Twilight yelped, getting her hooves and following after Trixie. If push came to shove, she was the stronger unicorn, so as long as she found Rainbow Dash she could grab her and get them both out of there pretty easily. That meant she had to find Rainbow Dash first, which apparently meant playing along for a moment. “What’s this about, Trixie?”

“Trixie will explain!” Trixie assured her, “But first, we should wake up Rainbow Splash. I’m sure she’ll be glad to see you.”

…

Yawning, Rainbow Dash stretched her forelegs as she heard a creaky door swing open, and though she didn’t remember to glance away from the mobile in her crib, she realized after a second that it wasn’t spinning any longer, and as such she didn’t fall back asleep as soon as she saw it.

Seeing a couple fuzzy figures in the doorway, she blinked a couple times and her vision came back into focus. There was Trixie in full cape and regalia, and next to her, wrinkling her nose and looking a little shocked…

“Twiwai?” Rainbow asked, wiping off a little of the drool that had collected around her pacifier. “Twiwigh!” It was definitely her! “Gemma oudda hewe!”

Twilight started to get a teleportation spell ready, planning on grabbing Rainbow Dash and blinking out of there. They could come back to deal with Trixie later.

“Not so fast,” Trixie warned, quickly. “Before you do anything more stupid than usual, teleportation spells won’t get you outside this house.Trixie has made sure of it. You can move around inside the house, but no pony will be getting out of here without my permission.”

“Wow, really?” Twilight asked, raising her eyebrows. “That’s high-level magic! How did you do it? I mean, I’ve read theory, but…” Shaking her head, she got her sights back on the task at hand. Wheeling on Trixie, her horn started to glow and she planted her hooves aggressively. “Let her out of the crib, and undo whatever you did to her.”

“Trixie might do the first thing,” The Great and Powerful Trixie said, shaking her head. “But I can’t undo the other effects, even if I wanted to.”

Narrowing her eyes, Twilight said, “I’m taking Rainbow Dash out of here and figuring out how to reverse it myself, then.”

Trixie shook her head, grinning at Twilight’s apparent resistance. “You can try,” she said. “But Trixie has gotten stronger, and you’re not getting out of here without going through me.”

Rolling her eyes, Twilight started working on a spell that would daze Trixie for a few seconds. It wasn’t anything major, seeing as Twilight didn’t know much about using magic for violent purposes, but it would be plenty to give her time to leave with Rainbow Dash. In case Trixie could use some kind of counterspell, Twilight poured a lot of power into the spell, cranking it up to eleven and throwing all her weight behind it to make sure it got through. It took a few seconds to build up the spell, but she figured that the extra force behind the magic would be worth the loss of surprise.

Blasting Trixie with the spell, though, Trixie simply flicked her horn and a gout of black energy blocked Twilight’s own spell with what looked like almost no effort.

“Is that all Twilight has to offer?” Trixie asked, smirking. “If you’re done wasting our time, then-” Twilight threw another spell, trying to hit Trixie quickly and keep her from preparing a spell. Again, Trixie barely seemed to notice except for the flicker of black energy on her own horn. Trying a different spell, the same result. “I’ve seen magic kindergarteners cast tougher spells. Is that really all-” Twilight tried a third spell, again to no avail. “This is just embarrassing for you, isn’t it? Well, if you’re done-” She caught Twilight’s flimsy attempt at a right hook with a little more magic, and then finally her own horn seemed to glow with a little effort as she slammed some kind of spell at Twilight.

…

Rainbow Dash yelped and ducked as the wooden bars of her crib were knocked out of their socket and a few cracked inward as they were smashed by a flying Twilight Sparkle, who then hit the bars on the other side of the crib and came to a stop, landing at Rainbow’s feet. Seeing an opportunity, Rainbow tried to lunge at Trixie over the splintered bars of the crib, only to find herself stopped in place despite the lack of physical barrier.

“You’ve got to be kidding me!” Rainbow whined, as Twilight groaned and sat up.

“Are you done?” Trixie asked her, mostly ignoring Rainbow Dash for the moment as she stalked up to the crib. Snapping the latch on the crib open, she pulled Twilight bodily out with a yank and said, “Trixie isn’t even winded. If you don’t stop making a fuss, I’ll take it out on Rainbow Dash.”

“C’mon, Twiwi!” Rainbow Dash started, trying to encourage her friend, until she heard Trixie’s last comment. “Youc’n win! Don’… Uh, wai’, no- Do wha’twicksie says!”

“Yes, do what Trixie says,” Trixie added, as Twilight blinked a couple times and finally snapped out of her daze, sitting up and shaking her head to clear it. “Just sit there, and don’t try and leave the crib until Trixie says it’s alright. Do you understand?”

“H-how?” Twilight asked, her voice sounding a little weak and shaky. She started to move to get up, but Rainbow Dash quickly sat up and put a hoof in front of Twilight, not wanting either of them to incur Trixie’s anger.

“The Great and Powerful Trixie has no need to answer your questions,” Trixie said, eyes narrowing. “She thinks that Twilight need a lesson about who’s in charge here. And, as it happens, Rainbow Splash needs to be changed before she makes the whole house reek like she does.” As she spoke, she slid a stool over and sat down, and then turned her horn to another task.

“Huh?” Rainbow Dash mumbled, realizing that she was being referred to again, but before she could protest any further she felt a sharp yank on her tail as Trixie grabbed her with magic and drug her out of the crib. There came a splurchy noise from the seat of her diaper, as well as a little crinkle as the diaper shifted, but it was so full that the extra mass barely made things any worse. “Pumme dow’!” She yelped.

To Rainbow’s surprise, Trixie did exactly what she asked, cutting out the magic and letting Rainbow fall down. Sure, it landed her straight on Trixie’s lap, but the surprising timing of the release still gave Rainbow Dash the slightest glimmer of hope that Trixie was showing mercy… At least until she realized it had just been a coincidence.

“Now,” Trixie said, looking at Twilight and barely paying attention to Rainbow Dash as she grabbed a wooden paddle from the corner of the room and brought it over with magic. “Normally Trixie would prefer to keep Rainbow Splash sucking on her pacifier all the time so I wouldn’t have to hear her mewling, but just now it will serve the demonstration to hear her pathetic crying.”

Rainbow Dash clenched her teeth as she felt the pacifier removed from her mouth, noting her tongue going suddenly dry and feeling immediately parched. She knew what was coming next, and it wasn’t going to be fun.

“Stop!” Twilight said, wanting to save Rainbow Dash from the inevitable. She started to take a step forward, to get out of the crib she had landed in, but with a slight twitch of her horn Trixie brought up a translucent wall of magic that kept Twilight trapped.

“Interfere, and Trixie will only make it worse for your pathetic little ‘friend’,” Trixie promised, smirking at Twilight as the purple unicorn tried to get past the magical wall keeping her trapped.

Twilight gritted her teeth, already preparing a spell to try and get past the barrier, but she saw the fear in Rainbow Dash’s eyes and sat back, sitting on her haunches and trying to come up with a plan as she watched what happened.

At first, when Trixie flipped up the pink skirt and brought the wooden paddle down on Rainbow Dash’s diapered backside, not much happened. Rainbow Dash squeaked a little bit, but she seemed more embarrassed than in pain. The diaper taped around her flanks looked to be putting strain on the plastic plants, but it was made from thick, absorbent padding and it was full enough that, as loud and quick as the smacks against it were, a lot of the force seemed to be absorbed and the final result of the blow was something far less painful than it would have been otherwise. Absently keeping count of the spanks, Twilight watched with mixed fear and sympathy for her friend.

The spanks went on, though, and by the fifteenth spank things were starting to look bad. With each smack, the diaper was repeatedly smushed up against Rainbow’s behind, shifting the mushy contents out of the way and wearing away at Rainbow’s meager protection. At the same time, the repeated blows were clearly wearing away at Rainbow’s natural pain tolerance, and at twenty three spanks Rainbow let out a genuine whimper of pain, biting her lower lip and blinking to keep her eyes from getting too watery. Twilight wanted to take a step forward and intervene, but she held herself back, remembering that without a plan and without some kind of secret weapon, she’d be as helpless as before. Trixie’s magic was too powerful to go up against head-to-head, and if she couldn’t teleport out of the house to escape… This could be looking bad.

Twenty nine spanks in, and Rainbow Dash let out her first genuine sob of pain, a single tear running down her cheek. At thirty two spanks, the second tear escaped, and at thirty three spanks Rainbow was no longer able to keep from breaking out into loud, infantile sobs. Kicking out her hind legs and flailing them helplessly, Rainbow Dash started bawling at the top of her lungs, the tears which had pooled in her eyes flooding across her face and dripping onto the floor.

Twilight only then realized that Trixie hadn’t so much as looked at Rainbow Dash this whole time, instead preferring to watch her other captive’s face for reactions. She gulped, trying to ignore the shrill bawling that was echoing in the room.

At fifty spanks, the plastic pants finally gave way, snaps breaking on the side and falling out of the way. The diaper beneath sagged even further, drooping well below Rainbow’s knees. That was the tipping point for Twilight, and without considering what had just happened, she got to her hooves within the crib.

“Stop!” She announced, boldly getting to her hooves, making both Trixie and Rainbow freeze and look up at her. “Let her go!”

Raising an eyebrow, Trixie smirked. “Trixie can’t have heard that right. Did Twilight Sparkle ask to have me let Rainbow Splash go… Now?”

“No, do-mmmph!” Rainbow Dash started, before the pacifier was jammed back into her mouth and gagging her words.

Realizing that something was up, Twilight had to review what she knew of what was happening. It only took her a second to remember everything else about spankings in the past, and that the spanking had been necessary to get Rainbow’s diaper changed. If Trixie let her go now, it’d just mean that Rainbow would need another spanking to get cleaned up.

Eyes widening, Twilight quickly said, “No! Don’t- I didn’t mean-” She stammered, trying to figure out what to say to recover from her lapse in judgement.

Rolling her eyes, Trixie said, “The Great and Powerful Trixie doesn’t care to give Rainbow Splash another spanking, so I will ignore your foolish mewlings for now.” Pushing Rainbow off her lap and letting Rainbow tumble to the floor, she gingerly picked up the plastic pants with her magic, wrinkled up her nose, and said, “So long as somepony stays in the room with her, she won’t need another spanking to get her filthy diaper changed. Until these,” she gestured to the plastic pants, “Get put back on, though, she’ll need someone with her. I suggest you don’t leave, for your ‘friend’s’ sake.” And, without waiting for any responses, she turned on her hooves and strode out the door.

…

Rainbow Dash lay whimpering on the ground as she heard the door slam, feeling very little except the most basic of emotions. Pain, humiliation… Other things, things that she didn’t want to try acting on at the moment. She was distantly aware of Twilight’s presence in the room, but her eyes were so blurry with tears that she couldn’t really see her. She squeezed her hind legs together a bit, feeling her diaper mush and shivering with the little tingle of pleasure that came through in spite of the searing, burning swath of discomfort that her flanks had become.

That one spot of pleasure between all the pain became something to focus on, even as she whimpered on the floor. Previously her spankings had all been followed by immediate cleanup, and the relatively soothing comfort of feeling clean, and then having the numbness of a clean diaper help dull whatever pain was left. Now, though, she was left effectively alone, and with nopony to deal with her dirty diaper, and having been prevented for too long from being able to act on her baser urges.

Feeling a hoof drift down between her legs, she started rubbing at the crotch of the diaper, moaning with pleasure.

…

“Thank goodness she’s gone…” Twilight said, waiting until she was sure that Trixie wasn’t just about to poke her head through the door the moment that everything had settled. Hearing a moan from the ground, she had a sudden fear that Rainbow had been hurt more seriously than it appears and, looking down from over the remaining bars of the crib, she saw her friend on the ground, lying on her back, eyes watery and half-shut, her back arched… Her hoof… between… her legs.

She couldn’t be, right? Twilight asked herself, taking a half-hoofstep forward and bumping against the magical barrier that Trixie had left. Without anypony keeping the spell together, the shield would dissipate quickly, but for the moment Twilight just leaned up against it, muzzle pressed up flat against it like a glass barrier at a candy store. She wasn’t entirely sure that she was seeing what she was seeing. Rainbow was probably in a lot of pain from her ordeal, and not in a clear state of mind, and…

“MmmMMMM,” Rainbow Dash moaned into her pacifier, stroking her hoof up and down a particularly lumpy section of the ruined and saggy diaper, back arching in pleasure. Mouth closed around the pacifier, she made another less distinct sound of pleasure then, inhaling quickly through her nostrils as she closed her legs a bit.

“R-rainbow Dash?” Twilight asked, confused, her cheeks turning pink with embarrassment as she watched. She wasn’t sure what to do here. It wouldn’t be that hard to get through the magical barrier and intervene, but without information she wasn’t sure if that would help. This could easily be some new part of the curse, and maybe Rainbow Dash had no choice if she wanted to get cleaned up.

As Twilight pondered this, she watched with a strange turmoil of emotions, (with horror and fascination being the two competing for the top ranking,) as Rainbow reached with her free hoof to the seat up the diaper, pulling it up so that the bulk of the mess which had been smooshed away from between her legs could be moved into a more intimate position.

Finally realizing that maybe it was inappropriate to stare as her friend was pleasuring herself on the floor, Twilight turned away, staring instead at the wallpaper decorated with teddy bears and foal rattles.

“MMM!” Rainbow Dash moaned, before letting out a series of short and breathy grunts. Curiosity getting the better of her, Twilight glanced over her shoulder to take a peek, seeing her friendly neighborhood Rainbow Dash shifting her weight up and down on the diaper so that its contents squished up against her in a rhythmic fashion.

Blushing again, Twilight decided that maybe she should intervene. Quickly giving the magical barrier a once-over, she ignored the moans coming from Rainbow as she whipped together a counterspell, tearing down the translucent wall and stumbling out of the crib, towards Rainbow Dash.

Just as she was about to speak, though, Rainbow suddenly went stiff, letting out the loudest groan yet and arching her back enough that the seat of her drooping diaper almost lifted off the ground. She stayed like that for several seconds, body bent in apparent ecstasy, before going limp and slumping to the floor.

Twilight shirked back, waiting a few seconds before she quietly asked…

…

“Rainbow Dash?”

Rainbow had been lying on the ground in post-coital ecstasy, taking a few seconds to forget about all her worries and troubles, and then she heard Twilight’s voice and her eyes shot open, pupils growing extremely small.

Voice cracking, she quietly mumbled. “Pweath teww me you didn’ juth thee dat...”

“I… did,” Twilight said, pulling the pacifier from Rainbow’s mouth with a short wave of her horn, and Rainbow Dash felt her heart sink down somewhere into the pit of her stomach.

“I… It was the curse!” She said quickly. “It… Did… stuff?”

Shaking her head, Twilight said, “It’s fine, let’s just get you cleaned up and figure out a way to escape, okay?”

“R-right,” Rainbow said, feeling her face grow more red than her mane. The red parts of her mane, at least. Not the blue parts. Then, noticing something that had slipped past her awareness until then, she raised an eyebrow and asked, “Uh, why are you wearing a diaper?” Then, eyes going wide with worry, she asked, “Trixie didn’t curse you, did she?”

Twilight was quick to dismiss the worry, saying, “No, she just told me to wear one when I showed up, or she’d... “ Clearing her throat, she cut herself off. “It’s complicated. Can you climb up on the changing table?”

Rainbow was eager enough to get all cleaned up and obeyed quickly, struggling a bit to lift herself onto the table with the extra weight dragging her down, but that didn’t quite distract from Twilight’s comment. “Or she’d what?”

“She… Had some pictures of you,” Twilight admitted, as she grabbed a diaper from the stack on the changing table, opened the box of wipes, and then popped the tapes off of Rainbow’s diaper. “Well… A lot of pictures.”

Rainbow’s pupils shrank, and she swallowed on a dry mouth. She made a choking noise as she started to ask a question, feeling sweat start to form on her brow.

“Don’t worry, she won’t get to show them to anyone else,” Twilight said, wrinkling up her nose and muzzle at the smell of the untaped diaper. “We will figure out a way to get out of here and stop her.” Horn glowing, she started the wiping-up process, her usual efficiency only slightly hampered by the scale of the mess she was dealing with.

“Right…” Rainbow Dash mumbled, sounding less than convinced. Then, noticing Twilight’s frown, she asked, “What’s wrong?”

Twilight furrowed her brow, glancing to the side and then shaking her head. “Your diaper rash is looking pretty bad, Rainbow. There’s no rash cream here, but we’ll need to do something about it as soon as we get you out of here or else you could have some serious long-term damage.”

“Oh,” Rainbow said, not exactly sure how to respond to that. “And if we don’t?”

Twilight thought for a second. “Well, if we don’t deal with it, you could start experiencing serious pain, and may even need skin grafts if it gets too bad, though-”

“No, I mean, if we don’t get out of here?” Rainbow Dash asked.

They were both quiet for a moment, and the room was almost entirely silent save for the slight crinkling of a fresh diaper as Twilight unfolded it. Rainbow lifted up her behind automatically so that Twilight could slide it under her, pulling her tail through the small hole for it and then taping it up securely.

Nodding at a job well done, Twilight said, “We’ll get that diaper cover thing-”

“Plastic pants,” Rainbow supplied.

“We’ll get the plastic pants on that so we won’t have to clean you up again as soon as Trixie comes back,” Twilight finished.

…

Muahahahah! Finally, Trixie will have her revenge on the evil, scheming Twilight Sparkle for what she did to me.

Trixie grinned to herself, horn glowing brightly as she mixed together her pick-me-up potion. The battle with Twilight had taken a lot more out of her magical reserves than she would admit, and without a power boost to keep her going, another battle might leave her too drained to keep up the high level magic she had been impressing Twilight Sparkle with. She barely needed the book for reference anymore, but just to make sure she had everything in proper order she withdrew the book, distinguished by the five-pointed pentagram inscribed within a simple circle on the cover, and the title, ‘Tenebris Potum Vindictae’.

Flipping to the index page, she skipped past the warning at the top of the page, found the right recipe, and flipped to the potion recipe she’d been using for some time now to enhance her magic.

Reading the recipe aloud without thinking, she mumbled it and mixed the recipe. “Warning, this potion may cause… hmm… Wild mood swings, et cetera, loss of judgement, blah blah… Do not take regularly, or… Yada yada yada… great peril… Who even reads these things? Wait, here we go, ingredients. The juice of a sour lemon, got it, two drops spoiled milk…”

As she rattled off the ingredients, she pulled them over with magic and dumped each into a small cauldron, mixing each over a light simmer, before finally adding the touch of magic needed to finish the magical beverage and straining it into a mug she had on standby for just such an occasion.

Sipping the potion, she felt the magic returning to her, along with fresh thoughts of anger and frustration towards Twilight Sparkle, and her little friends.

I come in to town to put on a magic show for them, and what do they do? They jeer, they mock, they try and ruin my show.

Trixie had dealt with hecklers before, but this was a special case. Normally she’d shut one down with a bit of an embarrassing show for them, keep the crowd smiling, and anypony else who had been considering throwing a wrench in her show would get the message that it was a bad idea.

Not these Ponyville jerks, though. They had to keep coming, keep trying to ruin the show for everypony else. Why couldn’t they leave well enough alone? And then Twilight Sparkle had to go and ruin me for good, making sure nopony else would take my show seriously again. Well, we’ll see how she likes being the laughingstock of the town for a change. And once this goes well, Trixie can see about gathering the rest of her friends for a little lesson, too. I’ve already got two of them, so why not all six?

Finishing the rest of her potion, she got out the black sludge-filled baby bottle. The potion. The potion for Twilight. The potion chosen specifically to curse Twilight. Twilight’s potion.She wanted it out and ready, so she set it on the countertop for easy retrieval, dusted off her cape, and started trotting back to the nursery. Time to finish this.

…

Twilight heard the door handle jiggle and looked up from her hushed conversation with Rainbow Dash, seeing Trixie enter with a new spring in her hoofsteps as she entered.

“Trixie,” Twilight said, narrowing her eyes.

“Twilight Sparkle!” Trixie responded, grinning broadly. “Would you kindly follow Trixie? I’d like to show you something in the other room.”

“Just a minute,” Twilight said, making Trixie freeze and raise an eyebrow in annoyed surprise. “Plastic pants for Rainbow Dash?”

Letting out a snort, Trixie rolled her eyes. “Of course,” she said, horn glowing as she flew in the plastic cover from the other room, affixing them to Rainbow Dash’s flanks without even looking. “Now, come with Trixie before I start to get upset.”

Twilight looked over at Rainbow Dash, who gulped but nodded. “Fine,” Twilight said, turning back to Trixie and following her out the door, not bothering to shut it behind her. Swinging the door open to the lab, then, Trixie led them in, and Twilight didn’t bother to shut that one either.

“So what did you want to show me?” Twilight asked, a little curiosity in her voice. Then, noting the book on the desk, she started putting pieces together. “Trixie… This is an extremely dangerous book, you should really be careful with-”

“Quiet!” Trixie demanded, yanking the book away and tucking it on a shelf behind her back protectively. “That book is not for every pony to just… Read. It belongs to Trixie, and nopony else!”

“Oh, really?” Twilight asked, taking a step to the side as though to get around Trixie. She couldn’t help but smile a bit at the opportunity, though she tried to keep it to merely a small grin. “Are you suuure I can’t just get a little peek at it?”

“No!” Trixie said, taking a step laterally to Twilight and sliding the book alongside her to keep it as far away from Twilight as possible.

Frowning, Twilight took two more steps around, asking, “Trixie, what’s the harm?”

Trixie frowned, furrowed her brow in annoyance, and again moved to the side along with the book, stopping Twilight from getting a look at the potion book.

Not even bothering to comment, Twilight took another two steps to the side.

Glaring in anger, Trixie said, “You are not going to see this book, Twilight Sparkle and unless you quit moving this second, Trixie is going to get angry.” And then, she took two more steps to the side to stay parallel with Twilight.

Which put her back to the door.

The door that had been left open.

The door that had been left open intentionally by Twilight, giving Rainbow Dash an opportunity to charge.

“Now!” Twilight shouted, and before Trixie could so much as raise her eyebrows in surprise, a speeding bolt of barely-aimed blue pegasus clad in pink party dress slammed into her from behind, tackling Trixie and sacking her like a professional stallion linebacker. Rainbow’s wings may not have been particularly obedient, but they were still strong and fast, and she hadn’t needed much finesse to accelerate ten feet in a straight line.

At the same time as that was taking place, Twilight had a spell ready to hit Trixie as a followup to Rainbow’s assault. Before she could launch the magic at the Great and Powerful Trixie, though, Trixie had managed to half spin, managing to get Rainbow Dash off of her and throwing up a magical shield. The two magical blasts of force met in the air, creating a blinding flash of light between the two of them, but it didn’t take long before Trixie’s magic began overpowering Twilight’s.

Rather than keep the magic going in a losing battle, Twilight instead released her magic and dove to the side, letting Trixie’s spell blast past her and burn a hole in the wall. Then, horn glowing again, she tried once more to launch a spell at Trixie. Again, though, Trixie’s horn glowed black with green spots of viscous energy, and the two blasts of magic met without any harm to Trixie. Twilight dodged away again, but it was a closer miss this time, with Trixie’s returning bolt of magic barely singing past Twilight’s mane and knocked over the desk behind her, sending jars and beakers tumbling.

“Enough!” Trixie shouted, and the energy around her horn grew more intense as she suddenly grabbed Twilight within an aura of magical energy, holding her in place. Twilight tried to move, but the magical field around her kept her held in place, incapable of escaping. Glaring daggers, Trixie’s horn continued to glow more intensely as she worked some kind of spell, and Twilight realized with a sudden jolt of concern that Trixie was weaving a second work of magic while maintaining the magical barrier keeping Twilight restrained. That took a lot of skill, or even more power, and as long as Twilight has helplessly suspended in place there wasn’t anything she could do about it.

“The GREAT and POWERFUL Trixie has not worked this hard or gathered this much power for you to undermine me now!” She shouted, face contorted in rage, putting intense emphasis on the adjectives in her title as she pumped more energy into the spell she was preparing. “Nothing is going to stop me! I’ll teach you to humiliate Trixie! If I have to, I’ll teach everypony in Ponyville to give me the respect I deserve!”

Twilight made a choking noise, but with her muzzle held shut by the restraining barrier of magic, she couldn’t respond. She knew that whatever Trixie was preparing, it couldn’t be anything subtle. The amount of energy in the spell and the difficulty of maintaining that much magic all at once implied that it couldn’t be much more than a straight-up blast of pure magical force, but if that was the case, something that powerful could potentially even be deadly.

“Does the puny Twilight Sparkle have any last words?” Trixie asked, her rage mellowed into a mere quiet, intense fury.

“MmmmMMMmmMMMM!” Twilight mumbled, trying frantically both to open her mouth and plead for Trixie to stop, and to somehow take down the immensely strong field of magic keeping her frozen in place.

“That’s what I thought,” Trixie said, dropping the magic keeping Twilight in place and unleashed the magical attack with enough force to level a small forest.

Rainbow Dash’s eyes went wide, and she leapt in front of Twilight. The bolt of magic hit her, launching her into the wall and collapsing it before hitting the ceiling in the next room over, slamming through it, and finally crashing through the roof as she was launched with enough speed to send her halfway across Ponyville.

Seeing her opportunity, Twilight’s whole body vanished in a flash as she teleported, before she could see what had happened to Rainbow Dash. Not away, or out of the house, but instead appearing just behind Trixie. Not having any time to spare, for fear that Trixie would catch her breath and react, Twilight didn’t try for a spell. Instead, she reached out, found something hard and cylindrical, and brought it crashing down on Trixie’s head like a club.

The glass bottle she had used as a weapon shattered upon impact with Trixie, sending glass and the black, gooey contents of the bottle flying everywhere. Trixie was knocked out immediately, collapsing to the floor like a sack of potatoes, the dark sludge running down, getting in her mane, and spilling onto the floor.

“Blech,” Twilight groaned, shaking her hoof in an attempt to shake off some of the ooze that was clinging to her foreleg. It didn’t seem to want to come free, but it also didn’t cause any pain or discomfort, so she assumed it was harmless. After all, she had no way of knowing how toxic it was, or else she’d have run to the kitchen to clean it off before the potion could leach through her skin.

Looking down at Trixie’s limp form, Twilight commented, “Thank goodness that’s over. Say, do you know what this gunk is?” There was a moment of silence, and Twilight said again, “Rainbow Dash? Are you…”

Turning around, she saw the three matching holes in the wall, ceiling, and roof. Eyes going wide, she quietly mouthed, “Oh… no…”

…

Under normal circumstances, the magical blast which had hit Rainbow Dash would most likely have been fatal, or at least landed her in the hospital for months. As luck would have it, though, she had a few things going in her favor.

Firstly, she had only been winged by the shot, not taking the full force head-on and instead being clipped and launched away by the magical blast.

Secondly, she was a pegasus, and a resilient one at that. Crashing through three walls along with her eventual crash landing would have been horrible for anypony else, but for someone with her frequent history of crash landings and hard impacts, Rainbow Dash was better equipped for an impact like that.

Finally, and most importantly, she was in the final stages of a mystical malediction which fed on magical energy.

While the blast that hit her was powerful enough to send Rainbow Dash soaring, the vast majority of the magical energy was absorbed by the curse affecting her, and even the remaining energy couldn’t do any lasting harm to Rainbow, as whatever effects were done by the magic found themselves immediately undone.

Of course, though, all things come with a price. As Rainbow Dash tumbled to the ground, landing in an open area she would have recognized as Ponyville square if she had been totally aware of her surroundings, she felt a sudden shifting of mass within her bowels that demanded an immediate relief of pressure.

Other ponies in the square, having seen the crash and wanting to be good samaretins, were beginning to gather around and approach with cautious curiosity to see if the blue pony in the strangely foalish pink attire needed any help.

Pupils shrinking to pinpoints as she realized what was about to happen, Rainbow looked frantically for some kind of escape in the few seconds she had before the magic of the curse fully converted the energy into mass, and deposited that mass into her diaper. She couldn’t fly, that would only crash her to the ground again, she couldn’t try and cover herself up with Twilight’s magic preventing her from wearing clothes except for those forced upon her by the curse, and so while it was a hopeless attempt, she tried to get to her hooves and simply run for it.

It was too late, of course. The final warning came when, just as she reached her hooves, Rainbow felt her tail hiking in natural response to what was about to happen. There was nothing she could do.

Rainbow Dash gulped.

Epilogue

THREE WEEKS LATER

Knock knock knock.

Rainbow Dash answered the door to the library, just cracking it open a bit to see who it was before opening it the rest of the way, making sure that the blue cloak she was wearing was pulled around her. “Hey, Fluttershy,” she said, smiling. “How’s your day been?”

“Oh, it’s been nice,” Fluttershy responded, returning the smile as she trotted inside carrying a sleeping bag and pair of pajamas under one wing. “They finished the repairs in the courtyard today, I hear that the mayor’s rededication speech was very nice. And how are the girls?”

Blushing a bit as she remembered what had wrecked the courtyard in the first place, Rainbow said, “Er, well… That’s good, I guess. They’re doing okay, we all just had lunch, now Twilight is getting some reading done, and Trixie is in time out.”

“Oh dear, what did she do now?” Fluttershy asked, concern in her voice as they walked towards the back room in the library which had been converted to a temporary nursery until Twilight and Trixie recovered.

Rolling her eyes as they reached the nursery, Rainbow opened the door and replied, “She pulled Twilight’s mane. With magic. It took me twenty minutes to get both of them cleaned up.” Inside, Twilight was sitting against a wall, wearing a yellow polka-dot onesie which didn’t quite hide the bulge of her diaper, suckling on a matching pacifier and happily reading a book on advanced magical theory. She didn’t even look up when Rainbow and Fluttershy entered, too engrossed in her book to much care. Trixie was sitting in the corner of the room dressed in a young foal’s pink dress, facing the wall with her arms crossed in a pouting gesture.

Shaking her head, Fluttershy sniffed at the air, wrinkled her nose, and then commented, “Speaking of which, it smells like somepony needs a little change.”

“Oh, uh, that’s me…” Rainbow Dash admitted, blushing a little and pulling her cloak a little tighter around herself. “I figured I could just change when I got home, since you’d be here soon.”

“Rainbow Dash,” Fluttershy admonished, shaking her head disapprovingly. “It’s been more than two weeks since Trixie’s curse wore off, you really should be working harder on your potty training.”

“Yeah, I know…” Rainbow conceded, shrugging and looking more annoyed than embarrassed by the lecture. “I’m working on it, okay?”

“Wainbow Dash wikes weawing diapas!” Trixie taunted from the corner, her own pacifier making her voice a little garbled, making Rainbow suddenly flush with embarrassment and stamp a hoof on the ground.

“I do not!” She protested. “Shut up!”

“Girls, there’s no need to fight,” Fluttershy said, interjecting herself into the argument. “Trixie, Rainbow Dash doesn’t like wearing diapers, and there’s no reason to say mean things like that.”

“Yeaw?” Trixie sneered, the words losing a little bit of their bite on account of her pacifier. “Den why doeth Wainbow Dash awways wait untiw hew diapaw is leaking to change hewself?”

Upon hearing that, Fluttershy raised an eyebrow and looked at Rainbow Dash, who blushed sheepishly.

“Uh, I… don’t want to waste diapers,” Rainbow offered, weakly.

“I’m sure that’s true,” Fluttershy said, sounding skeptical.

An awkward silence passed, and then Rainbow Dash said, “Well… I think everything’s good here, so… See you tomorrow morning?”

Tilting her head, Fluttershy asked, “I thought tomorrow morning was Pinkie Pie’s turn to come over?”

“The Cakes had something urgent come up and needed her to foalsit,” Rainbow Dash explained, shrugging. “And last time she tried foalbabysitting the twins and these two at the same time… It didn’t end well. I told her I could fill in. So, uh… See you tomorrow?”

“Of course,” Fluttershy said, nodding and smiling. “Have a nice night.”

“Will do!” Rainbow Dash said, pulling her cloak around her and hurrying to the door, before pausing. “It’s not like I’m in any hurry to go do anything,” she added, quickly. “It’s just, y’know, uh… Bye.”

“Goodbye?” Fluttershy said, a little confused, as Rainbow hurried out of the nursery, and then out the library door.

…

Rainbow Dash beamed as she flew home, so used to the bulk of wearing a diaper that its mass didn’t hamper her flying in the slightest any more. She would admit to herself that she probably hadn’t been working as hard as she could on re-potty training herself, but if she was being that honest with herself than it was because she didn’t really mind anymore. As long as nopony saw her, there weren’t any issues, and they let her practice flying for as long as she wanted without interruption.

Plus, she thought, feeling her messy diaper squish between her legs as she did a lazy loop in the air on her way home. There are other benefits to full diapers, when I can get some alone time.

Seeing her home in the distance flying lazily towards it, she sighed in contentment. She could work on retraining herself to use the bathroom some other day. For tonight, she had other plans.

The End.

Chapter Six: Into the Woods

“Are… Are you sure about this?” Fluttershy asked, nervously peeking into the shadowy edge of the Everfree forest.

They had met Rainbow Dash there after the pegasus had flown top-speed to the forest entrance, since she hadn’t wanted to be seen trotting through town in a bright blue onesie announcing that she was wearing a diaper. Fluttershy and Twilight had been a few minutes slower getting there, but now the three of them were standing at the one opening in the thick grove of trees which led into the dangerous forest.

“M-maybe we can do this later,” she suggested.

“No! No way,” Rainbow quickly interjected. “We are NOT gonna wait any more! If Zecora can fix this, we gotta go talk to her!” She hadn’t actually been sure why they were heading to the forest when Twilight first brought it up, but after hearing Twilight’s explanation she had been all for it.

“Y-yes, okay, b-but why do you need me to go in there? It’s so… dark…” Fluttershy peeked into the forest again, her anxeity obvious.

“We need you in case something goes wrong,” Twilight explained, adjusting her saddlebags slightly. “Last time I went to Zecoras by myself, that cockatrice attacked and you had to save me! Three ponies are better than one, and you know the dangerous animals in here better than anypony.”

“R-right,” Fluttershy said, sounding unconvinced. “O-okay, but what if something r-really scary attacks us?”

“We’ll get him together!” Rainbow Dash promised. “All three of us! But we need to get in there and talk to Zecora! Pleeeease, Fluttershy?” She clasped her forehooves together in a pleading gesture, flapping her wings to stay upright.

“O-okay,” Fluttershy agreed, puffing out her chest to brace herself for the ordeal.

“Excellent!” Twilight announced, heading into the forest without further comment. Rainbow Dash followed second, and after taking a deep breath and glancing around a couple times, Fluttershy followed suit. After travelling through it a few times, it didn’t seem all to scary any more, but the risks were still present and so the three of them stayed on their guard, Twilight's horn glowing for light when the trees grew thicker together and blocked out the sun.

As it turned out, it was an uneventful trip. Aside from a couple rustling noises and the occasional glowing eyes peering at them from deep in the woods, they weren’t bothered. Finding themselves at Zecora’s cottage, Fluttershy glanced around cautiously for danger while Twilight knocked on the door. Rainbow Dash was glancing around cautiously too, but that was only to make absolutely sure that there was nopony out there to see her.

Answering the door, Zecora smiled, then tilted her head, and then her expression changed from a pleasant smile to an amused one.

“We, uh, need your help,” Twilight explained. “Are you busy?”

Shaking her head, Zecora said, “Hello, hello, my pony friends. What aid do you need me to lend?” Even with the rhyming cadence in her voice, she still sounded plainly amused when she spoke.

“It’s a long story, but Rainbow Dash is the victim of some kind of foalifying curse,” Twilight explained, giving a brief rundown of the situation.

As Twilight summarized, and summarized, and summarized, Rainbow Dash quickly found herself growing bored. She thought it would be fine just to say ‘This stupid curse is making me wear diapers and all this dumb girly crap!’, but Twilight apparently wanted to go into extreme detail in a five-chapter retelling of the events.

‘Snap!’

What was that? Rainbow thought, glancing over in surprise at the noise. She had heard something in the woods, she was sure of it, but she couldn’t see that deep into the trees. It had almost sounded like a ‘Click,’ hadn’t it? Was somepony out in the woods with a camera?

Taking a step forward, she looked around, trying to catch the photographer. It was probably just her imagination, wasn’t it? Glancing over her shoulder, she made sure that nopony needed her. Fluttershy was watching for dangers on the other side of the cottage, Twilight and Zecora were still talking boring stuff, no problems there. She took another step forward.

‘Click!’

She was sure of it this time, that was a click! There was somepony out there, there just had to be! Unless it was just her imagination, but what were the odds of that? She took another step forward, glancing around the dark woods to catch whoever was out there. Another step, and another, approaching the source of the sound. She made sure she was within sight range of Zecoras so she wouldn’t get lost, and-

“Raaaaaainbooooowww….”

Eyes going wide, she looked around in sudden panic. That couldn’t have been the wind! Could it? She knew the forest sometimes made sounds, but it had to be somepony for real this time! Sprinting off into the woods, she headed straight for the source of the voice.

Except… The voice hadn’t real had a source, she had just sort of heard it. So where am I running? As she got a little further in she slowed, looking around. Had it really been a voice? But if it was… Where was the pony? Nopony was out there. Or, if they were, it would be way too dark to find them. Away from the path and the light of Zecora’s cottage, she could barely see her hoof in front of her face. It would be better just to turn around and go back. She couldn’t see the cottage, but she knew which way she had been running, and it was a simple matter to just turn around and walk back. Besides, she could call out and they’d hear her and call back, right?

Turning a full one-eighty, she called out, “Twi-wi- Cewetha damah!” Her pacifier was back in her mouth, muffling her voice and making it impossible to really sound off. Well, no problem, she’d be able to see the cottage in a second, right?

“Hee hee hee.”

What in the hay was THAT? Rainbow thought, whipping around and spinning in place to find the source of the voice. Laughter? Somepony WAS out there, and they were laughing at her! It couldn’t possibly be the wind, it had definitely been laughter! That was a specific, malicious voice laughing at her or her name wasn’t Rainbow Daring Danger Diapered Dash.

What? No, that’s stupid. Why would I even think that? It’s just Rainbow Daring Diapered Danger- No! Try as she might, though, once the extra word was put in her string of middle names, it seemed to stick in her mind. She tried not thinking about it, but that was impossible. It was so stupid! It’s not like she could control it, it was just a thing that had happened to her! I do not need diapers! She told herself, spinning around again as she heard the wind- No, another voice.

”Little foal…”

“A’ NAW!” She shouted, angrily spinning around again. She wasn’t going to let that stupid… Whoever it was… Call her names! She turned back towards the cottage, she had to get back to the others. She had to pee, she’d need Twilight to change her diaper before long… But I’m not a foal! She thought again, heading towards the cabin. Or… Was this away from the cabin? Or was it this way? She turned, and again, and again, unsure where she was going. Hearing laughter again, she turned and glared into the darkness.

Okay, Rainbow, think. You’re smarter than this! Don’t let them tease you! You can just get back to the others. Just… Find your way back. Thinking, she realized the obvious.

Flapping her wings, she soared up into the air, looking around. Where was Zecora’s? She couldn’t see the cabin from the air, covered as it was by the treeline. The path was gone, too, all she saw in most directions were trees. Even in the direction of Ponyville, she could only just barely see the treeline. Sighing, she glanced around, then decided to land again. There was no point flying to Ponyville, she needed to get back to the cottage.

”Little foal can’t find her way home…”

GAH! Rainbow yelped into her pacifier, jumping in the air in surprise. There was no way that was wind! What the heck is that hissing noise? It took her a second before she looked over her shoulder and squinted, realizing that it was coming from her diaper. It was a second later that the pressure in her bladder had disappeared. At least her butt didn’t feel numb anymore…

“Did the foal have an accident? Hahahah!”

This time, the voice was distinctive and clear. It seemed familiar, too, though she couldn’t place it. “Sha’up!” She lisped, annoyed.

“What, are you going to cry?”

“N-no!” Rainbow shouted, her eyes watering. I don’t have to take this! I can leave! Twilight could wait!

Flapping her wings again, she heard laughter echoing one more time as she took into the sky, looking around. Ponyville located, she took off towards it. Twilight would figure out she was gone quickly enough. She’d hide out at her place for a few hours, take a nap, and then try and get to the library without being spotted.

As it happened, her ‘Wonderbolts’ onesie was actually pretty wind-resistant. Even in spite of the diaper between her legs, (Which she was pretty used to by that point,) she was able to fly easily towards her home. As fast as she was going, the onesie could even be mistaken for an actual flight suit unless somepony could read words blurring by at top speed.

Making it home, then, she wiped her eyes and glanced around. Nopony was home. Obviously.

With a pacifier in, she couldn’t have a snack or even get a drink of water. She wasn’t thirsty, anyways, and she mostly just felt tired. It had been tough sleeping these last few days, and burning the midnight oil to study hadn’t helped any. Trotting to her bedroom, then, she collapsed onto the mattress. A couple hours asleep, then she’d go find Twilight. What was the worst that could happen?

It’s not like she could have known in advance about the crib.