Flurry's Playdate

by Midnight Shadows

Rating: mature
Tags: Twilight Sparkle, Porn, My Little Pony: Friendship is Magic, Princess Cadance, Flurry Heart, Fetish, Shining Armor, Sex
Length: 12080

Four year old Flurry accidentally casts a spell that mentally regresses Twilight Sparkle and Cadance... But they also become strangely aroused.

This is a commission for anon. Cover art is also used without permission.

A four year old Flurry Heart refuses to use the potty, after having her diaper changed and an attempt to prove she can be a big pony while still wearing diapers, the filly accidentally casts a spell that mentally regresses PrincessTwilight Sparkle and Princess Cadance to her age, it also compels them to put on diapers and makes them strangely aroused.

Trigger Warning: Foalcon, Incest, F/F/F, Diapers, Diaper Usage (Wet), Mental Regression, Straight up clop. "Poor" little 4 year old Flurry being brought to multiple orgasms.

Chapter 2 Trigger Warning: Everything from previous chapter, M/F, More Incest, Brief Diaper Transformation

Chapter 3 Trigger Warning: Everything from previous chapter, F/F, More Incest, Diaper Transformation

This is a diaper story that also involves foalcon, if this is not something you'd enjoy please click away, thank you in advanced.

Published 2018-09-20 00:50:01 UTC
Last updated 2019-06-19 22:22:06 UTC

Flurry's Playdate

Author's Note

Do note, there are a few lines of epilogue below the "The End?" bit, just so you all know.

Flurry's Playdate

Flurry’s Playdate

Written By:
Midnight Shadows & Snow Blitz

Flurry layed on the playroom floor, her hooves clutching two pony dolls. She quietly sighed feeling her diaper growing warm and wet once more, the wetness indicators fading completely leaving only a smudged print. She continued playing as if nothing happened, ignoring the state of her diaper. “Uh-oh…” The filly whispered quietly, the hissing from within her diaper giving her away.

Twilight smiled while she spoke with Cadance, feeling generally relaxed to finally have time to spend with her old foalsitter and sister in law. She looked at Flurry noticing a small pause from the filly. “Flurry, did you go potty in your diaper again?” She frowned. “You know you’re supposed to tell us when you have to go so we can take you to the big filly potty.”

Flurry frowned, “I don’t want to use the big pony potty! Diapers are better.” She said defiantly, crossing her hind legs to cover the wet diaper from prying eyes.

Letting out a defeated sigh, the older pink alicorn looked to Twilight. “She’s four years old now and still having troubles, Shiny and I have been trying for months...” She explained, lighting up her horn to lift Flurry off of the floor, examining the sodden diaper and gently pressing a hoof against it. “You’re soaked Flurry, c’mon, let's get your diaper changed.”

“Some fillies take longer than others, I wouldn’t worry too much about it Cadance.” Twilight reassured. “After all, maybe she just inherited it from Shining, Mom told me all about how he had accidents during the day until he was at least six! Though the theory we have is that he liked it.” She continued. “O-or maybe she’s just a late bloomer like me.” Her face turned red in embarrassment. “Y-you remember.”

Cadance giggled, remembering the days of changing Twilight’s diapers well beyond early foalhood. “I remember, you couldn’t keep your sheets dry until you were almost finished with school.” She teased. “Not that there’s any shame in wetting the bed, it happens to ponies of all ages.”

“A-among other late developments with wetting that we don’t speak about... I still cringe every time I see that stain on the carpet of the throne room...” Twilight responded as she leaned down at the changing table to pull out a fresh diaper for Flurry.

“Did you want to change her diaper this time, Twilight?” Cadance asked, her horn glowing light blue, the magic grasping the tapes that held Flurry’s diaper shut.

“I want Auntie Twily to change me!” Flurry squealed in foalish excitement, she opened her hind legs exposing the swollen diaper to both mares.

“Well I guess that settles that then.” The purple alicorn said as she used her magic to get the other changing supplies onto the table before pulling open the tapes of the filly’s diaper. With what appeared to be trained skill she began to wipe the filly down gently with a foalwipe making sure to thoroughly clean her while simultaneously pulling the soaked diaper away, replacing it with a fresh one.

“That tickles!” The alicorn filly squeaked, feeling the cold foalwipe press into her sensitive folds.

Twilight giggled softly. “Well hold still and it’ll be over in a moment.” She said pulling the foalwipe away, she placed it inside the soiled diaper before rolling it up and tossing it into the diaper pail next to the changing table. She continued the changing process, applying rash cream and foal powder before gently rubbing it in. She finished by pulling the fresh diaper up between Flurry’s hind legs, threading her tail through before taping it snugly in place. Her magic ran along the edges of the seat of the diaper to ensure the leak guards were in place. “All done!”

The filly happily moved her hind legs around, adjusting to the fit of her fresh diaper. Determined to prove she was a big pony, she climbed down from the changing table herself, promptly falling onto her crinkly rear with a loud, “Oof! I’m okay, see?” She asked showing her aunt and mother both her front legs.

Cadance reached down to pat the top of Flurry’s head. “Please be more careful sweetie, Mommy doesn’t want you to get hurt.” She said, giving her daughter a kiss on the top of her head. “And try to remember to tell us if you have to go potty.”

“Cadance we’ll just stress her out if we keep reminding her to tell us if she has to go potty, I’ll just check her diaper every half hour to make sure she’s not too wet.” Twilight said giving her niece a sly wink. She grabbed a foalwipe from the container and wiped the changing table down making sure it was clean for the next diaper change.

Flurry gave a small blush at Cadance’s comment. “I can be a big filly and still wear diapers!” She protested, stomping a forehoof and giving a huff in a foalish display of a temper tantrum. With the sudden wave of emotion also came an unintentional magical outburst that lit up the room in a brilliant blue light combined with a few arcs of magic that bounced off of the horns of the other two alicorns. The outburst was amplified by the magic Twilight was using to levitate the cleaning supplies. When the magical outburst finished she found herself on the floor laying on her back, a small black spot on her horn. “That felt weird!”

Twilight Sparkle blinked several times, a strange feeling coming over her. She felt an overwhelming urge to put on a diaper and act like a four year old. “Flurry, sweetie, where does Mommy keep her big pony diapers?”

Taking a deep breath Cadance brought herself back to her hooves, also feeling the same compulsion that Twilight was. “I don’t have any, but I think I can fix that!” She said with a rather foalish tone, pulling several of Flurry’s diapers from the changing table and enlarging them to a size that would fit her and Twilight. “You first~” She said in a sing song tone, gently laying the purple alicorn on her back.

The purple alicorn climbed onto the changing table, eagerly lying down on her back, exposing her damp marehood to Cadance. “It’s all weird and damp down there, but I didn’t pee, I promise!” She explained, reaching one hoof down to her marehood before Cadance pulled it away. “I was just showing Flurry~” She said showing Flurry the sheen of moisture on her hoof.

Flurry Heart giggled and felt her own fillyhood growing slightly tingly under her thick diaper, a small trickle of moisture that wasn’t pee dribbled down into the absorbent padding. “That’s silly Auntie Twilight! You’re silly!”

“Yeah Twily you’re silly, we all know you can’t keep your diapees dry!” The older pink alicorn said, levitating one of the fresh diapers under Twilight’s plot before applying a large amount of foal powder, taking a hoof and roughly rubbing it in much like a foal would, her hoof becoming sticky from the fluids present. “You’re already wet anyway!” She giggled, pulling the diaper tightly into place and threading the other alicorn’s tail through the hole before taping it up, firmly placing her hoof back on the seat of the diaper. “There now you can be as wet as you want! I know you pretended to have potty problems anyway!” The mare exclaimed in a foalish display of blunt honesty from her memory.

Twilight blushed heavily, remembering pretending that she couldn’t make it to the potty on time. “That was our secret Cadance!” She huffed foalishly, “Besides you liked touching my fillyhood, you said I tasted really good and you loved hearing my ‘cute little squeaks’ and I liked it when you touched me there.”

Still giggling, Flurry poked at Twilight’s diaper like Cadance had, hearing a loud crinkle. “You two are really weird!” She exclaimed.

“Twily! You’re not supposed to tell anypony that! It’s bad!” The older alicorn said, her wings flaring out and muzzle turning red in embarrassment, though her currently regressed mind couldn’t understand why, just knowing it was ‘bad.’ “But you gotta diaper me! You never had diapers my size, so now it’s your turn to diaper me!” She exclaimed, laying down on the changing table.

The purple alicorn smiled and grabbed one of the enlarged foal diapers, she opened the diaper and slid it underneath Cadance’s waiting plot. Twilight dipped her hoof into the container of rash cream, slathering the cream in thick lines along the older alicorn’s marehood, rubbing it thoroughly until her hoof came back sticky. She blushed fighting the urge to lick her sticky hoof because of the rash cream. “Feeling good Cadance?” She asked shaking foal powder onto her crotch and open diaper. Truthfully Twilight was finding it hard to concentrate on the task at hoof, her marehood was dripping moisture into the seat of her clean diaper, and she was having strange thoughts of opening her niece’s diaper and licking along her fillyhood.

Cadance gave a small squeak at the application of cream and powder onto her nethers, her marehood was now leaking a steady stream into the seat of her open diaper, already making it wet enough that one of the heart wetness indicators on the exterior was starting to slightly fade. “R-really good~” She managed through a few sharp breaths, using one of her hind legs to push up at Twilight’s diaper and gently rubbing it.

Flurry giggled again. “Auntie Twilight you gotta finish taping her diaper in place! And I wanna feel good too!” She said innocently, not understanding what was going on.

Twilight threaded Cadance’s tail through the hole, and pulled the diaper up tightly around the older pony’s crotch, she finished taping it firmly shut giving the diaper a firm pat. “Mommy and I can make you feel good sweetie, would you like to feel good?”

The filly alicorn nodded her head vigorously, “Yeah! I wanna feel extra good!”

Cadance smiled, hopping down off the changing table she grabbed a few blankets from a nearby closet and laid them out on the floor. “Lay down Flurry, Mommy and Auntie Twilight are going to show you something fun~”

“Okay Mommy!” Flurry said, quickly moving onto the blankets and laying down on her back. She let herself relax, spreading all her hooves out on the soft blanket.

As Twilight finished with Cadance she brought herself over to the blankets as well, her own wings now extended in arousal. She could feel the sticky substance now sticking to both her marehood and the inside of the diaper producing a very pleasurable feeling with each movement she made, the diaper also keeping her tail in a somewhat raised position which only seemed to further her pleasure.

Cadance’s eyes were half lidded in arousal, she nodded at her sister in law who placed one hoof on the other side of Flurry’s diaper. Together they both gently tugged the tapes away from the landing zone, causing the filly to blush heavily and protest.

“M-Mommy! Why are you taking off my diapee?”

“Shh, don’t worry sweetheart it’s going to help you feel good~”

“Really good!” Twilight added as she used a wing to ever so gently move it along Flurry’s now exposed fillyhood. “See that feels really good!” She exclaimed, a forehoof being pressed into the front of her own diaper firmly as she continued to run her wing along the filly’s folds.

The filly shuddered, a small trickle of little fillycum dribbling out of her folds, she couldn’t explain it but having her diaper untaped like that made her feel really good. “T-That feels g-good… C-Can you take off my diapees like this more often?”

“Of course we can sweetie, Mommy wants to make her special little filly feel good after all~” Cadance singsonged, she gently pulled her daughter’s hind legs apart revealing her small fillyhood to the room. She leaned forward and planted a gentle kiss right on Flurry’s winking clitoris, making the filly cry out in pleasure. “Aww, doesn’t she sound adorable when she’s aroused?”

Flurry Heart let out a squeaking gasp, a shock of pleasure shooting from her fillyhood directly up her spine, several small spurts of fillycum dripping out into her diaper. “W-Wow, Mommy and Auntie Twilight are making me f-feel good!”

With the sight of the young filly squirting into her diaper, Twilight pushed against her crotch harder with both of her forehooves now, rubbing as much as she could to make the pleasurable feeling in her diaper continue. “I n-need to feel good too...” She trailed off, falling to her back, still rubbing her diaper.

Cadance giggled at Twilight’s need to clop, “We have to make Flurry feel good first remember Twilight?” She teased helping her back up to her hooves. The pink alicorn gently worked her hoof into the foal’s crotch, ensuring that she was still feeling pleasure at all times.

“I kn-know!” Twilight exclaimed, now grinding her crotch against a small pile of some of the blankets, her horn lighting up, purple magic enveloping Flurry’s wings. “I didn’t know how good that felt until Rainbow Dash showed me!” She said, using her magic to gently massage parts of Flurry’s wings while Cadance continued to rub the filly.

Flurry felt her wings snap open at the massage, she could hardly concentrate at this point, her brain was abuzz with arousal. “T-That feels really, really good Twily!” She managed through a sharp breath, a strange bubble of pleasure was building inside her crotch, almost like she had to pee but not quite. “Momma? I h-have to go potty!”

Cadance looked to Twilight and winked, she buried her muzzle deep into the filly’s crotch, her tongue forcing its way inside her tight depths. She pulled each sweet drop of fillycum into her muzzle, desperately drinking each drop as if it were the sweetest wine.

The small filly felt her body tremble as she felt a sudden overflow of that pleasure, her mother’s tongue feeling every spot inside of her wet fillyhood, pleasurable places she didn’t even know she had. With a loud squeak she could feel several large amounts of liquid start to pour out of her fillyhood into her mother’s waiting muzzle and down into her open diaper. “I-I’m P-peeing!” She said through various sounds coming out of her, not understanding that her orgasm was not pee.

Twilight was still grinding against the blankets as this was occuring, her own arousal growing as the warmth within her folds grew, she moved herself closer to Flurry, moving Cadance aside as the filly came down from her orgasm and she forcefully planted her muzzle into the filly’s nether regions, her tongue shooting into the filly’s folds with more vigour than Cadance’s had.

Flurry’s brain lit up in fireworks once more, arousal overwhelming every other part of her brain, she managed to squeal, fluids pouring out of her tight fillyhood completely soaking Twilight’s muzzle along with her already wet diaper. Her hind legs twitched, her vision going white from the sheer pleasure of it all. She gasped for air as she finally came down from her orgasmic high, the warm soaked diaper now taped tightly around her crotch. “Y-You made me go pee!”

With a mouthful of Flurry’s cum Twilight brought herself up to the filly’s muzzle and gave her a deep kiss, allowing the filly to taste her own sweet juices before pulling away, a trail of cum connecting their lips. After a moment of thought and the power of magical suggestion, Twilight’s face fell blank for a moment as a loud hissing noise filled the room, her diaper growing warm and wet around her rear, the diaper swelling up with the combination of her cum and pee as she continued to wet herself for a few moments before stopping. “Now we both peed!” She exclaimed when she had finished, turning to Cadance. “My turn! My turn make me feel good now!” She said, sitting down with a loud squish from her soaked diaper.

Cadance’s expression went blank, she felt and heard the loud hissing erupt from her own diaper. Urine rushed out of her into the thirsty diaper, she felt it beginning to swell between her hind legs as it soaked up her accident, she gasped wanting desperately to rub her diaper right there but more pressing matters were at hoof. “Do you want to help Auntie feel just as good Flurry?” She asked helping the foal back to her hooves, giving her a small kiss on the cheek.

The filly replied after she swallowed the sweet tasting fluid that had been placed in her mouth by Twilight. “Y-yes Mommy! I wanna make Auntie Twilight feel really good!” She said, one of her hooves idly rubbing at her warm, cumsoaked diaper. “H-how?” She asked innocently.

Cadance giggled, “Well let's start by taking off her diaper!” She encouraged her daughter, placing one hoof on one of the firm tapes and gently tugging, watching Flurry Heart do the same. “Now, we pull the diaper just a little bit away from her fillyparts, so we can take a look at them.”

Flurry did as she was instructed, pulling the front of the diaper slightly before it fell forward with a loud thump on its own from being so wet. The filly blushed when looking at Twilight’s marehood. “But you said it’s not okay to look at other ponies bits!”

“It’s okay if you know them sweetie, and since Twilight is your auntie it’s okay to touch and look there, I promise.” The pink alicorn explained eagerly, she reached over with one hoof and gently rubbed the seat of Flurry’s sodden diaper. “I think… Somepony might need a change soon~”

“D-do not!” Flurry protested. “If I need a change then you need a change!” She said, poking at Cadance’s soaked diaper and giggling at the squish. She turned her attention back to Twilight’s marehood, curious about it, and the warmth in her fillyhood compelling her to explore. She lifted a hoof up and pressed it into the mare’s folds, poking at various parts of her nethers before she started to rub up and down, her hoof becoming coated in Twilight’s cum. “I-it’s sticky!”

With a small gasp Twilight felt Flurry rubbing at her marehood, she could feel the warmth inside of her, an itch that needed to be scratched in her most sensitive area. “P-push harder!” She said, her own hoof rubbing at her folds as well. “I wanna feel good like you!”

Flurry continued to rub but got an idea to do the same thing Twilight and Cadance had, curiously moving her head forward and sticking her tongue out, licking up and down her aunt’s marehood. She could taste a strange sweet liquid not unlike the taste of her own but still different. Each lick compelled her to lick again, deeper, and more forcefully. She could feel the tingly feeling again building in her fillyhood even though she wasn’t touching it.

Twilight moaned at the touch of her niece on her fillyhood, “K-keep licking, especially the part that winks at you! That’s the part that will make me feel r-really good~” She gasped, her marehood twitching in arousal sending several drops of marecum splashing onto Flurry’s already drenched muzzle, she was getting close to finishing.

Cadance helped guide Flurry’s muzzle into the proper position before she moved up to Twilight’s head, pulling the tabs of her diaper open to let the front fall free. She slowly backed herself onto Twilight’s horn, feeling it push into her marehood. “I th-think Flurry can help you down there... I need help too though!” She said, moving herself up and down on Twilight’s horn, using it as a dildo.

Continuing to lick Twilight, Flurry could feel small squirts of liquid spraying on her muzzle every time the mare winked, her mouth filling with the sweet tasting sticky liquid, swallowing it each time, enjoying the taste. She pushed her tongue deep into the mare’s folds taking each sound of pleasure as an encouragement to keep going.

Cadance pushed herself up and down Twilight’s horn, her soaked diaper resting on her sister in laws muzzle, “L-Like the view Twilight?” She asked lowering herself once more, moaning loudly when Twilight’s tongue lapped at her exposed marehood. “I bet we can make Flurry cum again in her diaper, maybe we can get her to cum at the same time you do, that would be exciting!” She exclaimed, letting out a shuddering gasp she stopped moving up and down Twilight’s horn. Her marehood contracted squeezing the younger alicorn’s horn and inducing a very messy orgasm. Her own cum landed on Twi’s muzzle like a waterfall drenching the mare in her sex fluids.

Twilight could only let out a moan in reply, the sudden pressure on her horn combined with the view of the inside of a soaked diaper and Cadance’s soaked nethers only fueled her arousal. She lit up her horn, still deep inside of Cadance, and created a magical dildo to push into Flurry’s fillyhood, the object pushed fast and hard into the depths of Flurry, further than either mare’s tongue had. As Twilight continued to feel arousal she felt a sudden shower of cum all over her face and muzzle, flowing into her open mouth as the mare above her rode down an orgasm, the combination of pee and cum entering her mouth causing her to tremble from the sheer pleasure she was receiving at both ends of her body.

Flurry felt the object slide into her fillyhood and she gasped. The filly fell away from Twilight’s marehood and panted, feeling the magical dildo sliding in and out beneath her diaper. Her small fillyhood twitched several times beneath the diaper, “It’s t-tingly in my diapee!” She managed to squeak out, both mares giggling at her foalish mannerisms.

Cadance pulled herself off of Twilight’s horn, still allowing her open diaper to rest on the mare’s face. She turned herself towards Flurry and pulled the tabs open, allowing the fillycum soaked diaper to fall away from Flurry’s folds. She lit her own horn up a brilliant blue and formed a second magical dildo, using it to push in and out of Flurry with the same force of Twilight’s. She also enveloped the filly’s clit inside of an aura of magic, sending surges of pleasure through her young body. As all of this happened she felt one of Twilight’s hooves push into her marehood, gasping loudly at the sudden rubbing.

“I’m p-peeing again!” Flurry squealed out, watching in shock as her diaper was pulled away from her fillyhood. She watched her stream of fillycum arc out of her foalhood, splashing onto the blankets below before her aunt buried her muzzle back into her, not letting a single drop of her precious fillycum go to waste. With a small cry she fell onto her back, her bladder releasing onto the blankets around her, she didn’t care that she wasn’t diapered, her brain was too tired to process it.

“Oh dear, I think we made her fall asleep! We should get a fresh diaper on her.” Cadance said softly, planting a gentle kiss on her daughter’s fillyhood.

“I don’t think she’d want to be changed... After all a warm wet diapee is the best kind of diapee!” Twilight said, pulling away from Flurry’s nethers. She pulled her own diaper back up into place and taped it on securely before helping Cadance to the same. Before Cadance could do anything else however Twilight pushed her down onto her back, climbing on top of her and grinding her diaper against Cadance’s muzzle, pushing her own muzzle hard against Cadance’s diaper. “This should feel really good!” Twilight said as she continued to grind her soaked diaper against Cadance.

Cadance moaned feeling the squish of her own diaper against Twilight’s. “That feels really good!” She gasped, rubbing her squishy diaper front against Twilight’s determined to help her feel just as good. The older alicorn planted a firm kiss on Twilight’s diaper, tasting a mixture of pee and plastic. “Do you want me to use magic inside your diapee?” She asked pushing her muzzle hard into the wet diaper, grinding it along her horn.

“Y-yes!” Twilight managed through another moan, feeling the indentation of Cadance’s horn pressing into her wet diaper against her marehood, a stream of liquid flowing out of her into the diaper further soaking it. She lit her own cum covered horn up, quickly surrounding Cadance’s marehood with magic. “I’ll help you too!”

The pink alicorn giggled, “Silly Twilight!” She lit her horn up, creating a large studded dildo inside of Twilight’s diaper. Slowly she pressed the large magical toy into her marehood, making sure that each of the bumps ran along her clitoris furthering her aroused state. “Does little Twilight like it when I put toys in her diapee?” She asked pushing the toy as far as it could go in one powerful shove. She grinned pulling the toy out immediately after, slamming it back in repeatedly with powerful thrusts.

Twilight nodded, letting out a groan of pleasure as the toy rubbed inside of her, shouting out a loud gasp as the toy hit the end of her tunnel before being pulled back out, feeling it again fill her tunnel with thrust after thrust. All Twilight could manage to do to show Cadance that she enjoyed it was to try and pleasure her further as well. Her magic suddenly sending a large ringed dildo into Cadance, each ring a different size than the previous. She slowly moved the dildo in and out, her overwhelmed mind not able to hold the magic any faster than that.

Cadance collapsed the magical dildo proving too much for her, her legs quivered and twitched, her marehood unleashing squirt after squirt after squirt of marecum into the seat of her swollen diaper. She lay panting on the floor, unable to do much else as she came down from the intensity of the orgasm, she tried to protest when Twilight began untaping her sodden diaper, “N-No, it’s fine, I don’t wanna change!”

“I j-just gotta clean you b-before you fall asleep!” Twilight said, still grinding her diapered plot against Cadance’s muzzle and horn, she rubbed herself faster as the magic collapsed inside of her. A sudden overflow of pleasure causing her to release more and more cum into her diaper, the wetness indicators visibly changing from barely there to gone with each squirt of cum. As she rode down the orgasm she licked at Cadance’s marehood, making sure to take a mouthful of each and every drop she could before the waves of fluid turned into a small trickle. She stopped licking and gave the older mare’s clit a kiss before pulling the diaper closed. “B-besides you remember the rule!” She said with a pause, patting at the now tightly closed diaper. “No changies till you use it all the way!” She said, giggling as she climbed off of Cadance, weakly making her way over to Flurry.

Flurry was still barely awake, her eyes were almost closed, as she drifted off after having watched her aunt and mother pleasure each other. She felt Twilight tape her diaper closed, it had still been open from earlier. She drifted off as a small stream of fillycum emptied into her diaper, left over from the arousal. Just before she fell asleep however her bladder released, filling her diaper up more with a nice warm feeling to help her fall asleep.

As Cadance watched Twilight tape Flurry’s diaper up, and the subsequent wetting, she pulled a blanket over herself to get comfortable. “Th-that rule was for you s-since you n-never had diapers I could fit into.” She managed between breaths. “B-but okay, I th-think we should sleep now...” She said, as she slowly drifted.

Twilight laid down next to Cadance, not even hearing the words that had been spoken, she was too tired from her arousal to even really care at this point, all she wanted to do was nap in her warm wet diaper, she fell down on the blankets, one of her forehooves planted firmly against her diaper as she fell asleep.

Within only a few moments all three ponies in Flurry’s nursery had fallen into a deep orgasm induced sleep, the only thing they currently cared about was sleeping, not worried about their soaking wet diapers, Twilight and Cadance not worried who might find them in this state, they were now mentally the same age as Flurry for the time being, not knowing when the magic would wear off or if somepony would have to cast a spell to fix it.

The End?

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Shining Armour walked through the halls of the castle, he had returned early from guard duty. The castle was unusually quiet, although the normal guard force was around standing watch, Cadance, Twilight, and Flurry were nowhere to be seen. Shining wasn’t worried however, he knew they were probably in the playroom with Flurry, the guards knew not to disturb them for fear of upsetting the foal.

After a quick walk to Flurry’s playroom Shining opened the door, finding the room dark, somepony had turned out the lights. He lit his horn and flipped the lightswitch to reveal Cadance, Twilight, and Flurry laying on the blankets on the floor, multiple wet spots from their ‘fun’ visible present as well as their soaked diapers, all three, clearly visible.

The sudden light in the room caused Twilight to open her eyes, groggily she spoke. “Shiny?”

“Daddy!” Flurry Heart shouted, leaping up from her spot on the blankets, her heavy sodden diaper squishing with each hoof step. She jumped into her daddy’s waiting hooves, his magic pulling back the waistband of her diaper. “Daddy~ my diapee is fine!”

Shining blushed bright red, as the scent of fillycum drifted out of his daughter’s soaked diaper. Clearly, Cadance and Twilight had a lot of explaining to do when they woke up, assuming they would be capable of it. “Flurry, sweetie could you tell Daddy what happened?”

Double, The End?

Bonus Chapter: Flurry's Playdate Part 2 [Commission]

Flurry’s Playdate
Part 2

Written By:
Midnight Shadows & Snow Blitz

Commission For Bonded Friendship

Shining Armor stood in disbelief at what he was seeing, his little sister, wife, and daughter all wearing soaked diapers, surrounded in puddles of mare and fillycum. “C-Cadance? Twilight?” He asked as the two stirred in their slumber.

Cadance stretched letting out a quiet yawn before rolling over to face her husband, “Shiny! Wanna play with us?” She asked patting the damp blanket beside her.

Blinking, the stallion shook his head. “Cadance? Are you okay? Wh-what’s going on here?!” He asked, looking around the room. “What in Equestria happened here!?”

Shining’s raised voice caused Twilight to stir, her ears twitched as she brought herself up from under one of the blankets. “BBBFF!” She exclaimed. “We were just having fun playing games! You should come play with us!”

“I’m not sure I understand, Twilight. What kind of games were you playing?” The stallion questioned. He was ashamed to admit that the situation was really turning him on. “I don’t really think this is an appropriate thing to do with a filly, especially not your niece!”

“We were playing all kinds of fun games!” Flurry exclaimed. “Aunty Twily and Mommy were teaching me all kinds of new games and stuff with my diapers that feel really good!” The filly blushed. “Th-though my diaper feels all cold and sticky now...” She said, gently rubbing at the diaper on her plot. “They’re fun games! Daddy should play too.”

“Oh they’re very fun and perfectly safe~ Don’t you want to make Flurry happy? I think she needs to be changed.” Cadance teased. “Be a good Daddy for your daughter Shiny”

Shining Armor blushed crimson, the words coming out of his wife’s mouth were oddly arousing. The act of his daughter rubbing her diaper wasn’t uncommon, she usually did if she had become uncomfortable or really needed it changed. Cadance was right though, the filly did need a change. “Flurry, sweetheart, do you need Daddy to change your diaper?”

Blushing more, the pink filly shifted her weight back and forth on her hooves, ears down to either side of her head. “Y-yes Daddy, can you change my diaper p-please?” For some reason, she was embarrassed, an instinct inside of her saying that having Shining change her fillycum soaked diaper was something she shouldn’t do, but didn’t quite understand it yet.

“Oh, oh! Me next! I’m soaked!” Twilight exclaimed, trotting over to Shining before pushing her padded plot against one of his forelegs with a loud crinkle and squish. “I could really use a change Shiny~”

Cadance giggled, “I could use a change too but I think our daughter could use some love and affection.” She winked at her husband while saying the final word, leaving it up to him to decipher what she meant. “Twilight, dear, come snuggle with me while Daddy changes Flurry.”

Now incredibly uncomfortable, Shining lifted Flurry into the air with his magic and began to carry her over to the changing table as Twilight headed back to Cadance. He laid the filly down on the changing table. Slowly he unfastened the tapes on her diaper, pulling some fresh foalwipes from a container near the table. “Flurry, sweetie, can you tell Daddy what exactly happened that made Aunt Twilight and Mommy start being strange?”

“Mommy said I had to tell her when I had to go potty and that big fillies don’t use diapees!” Flurry Heart explained, squirming on the changing table while the cold foalwipe pressed into her heated nether region. “I told Mommy that big ponies can still wear diapers and I wanted to show her how much of a big filly I was.” She shivered, feeling her small arousal flaring back to life droplets of fillycum now sticking to the foalwipe. “Daddy~ you’re making my fillyhood feel funny!”

The stallion blushed, quickly pulling the wipe away from his daughter’s fillyhood. He was silent for a few moments, his mind locking away a small twinge of forbidden arousal before it could grow. “Flurry, did you use magic again? You know Mommy and I said not to.” Slowly he used another foalwipe to clear the other fluids from Flurry’s slit before sliding a fresh diaper under her and began to powder her.

“Maybe! But we’re having fun! Besides Daddy, don’t you want to play with my diapee some more?” Flurry asked with a small giggle, kicking her hindlegs while the powder was sprinkled onto her now slightly damp fillyslit.

From nearby, while cuddling with Twilight, Cadance, who couldn’t help but eavesdrop, added onto Flurry’s question. “Yeah Shiny, you really should try it, I can tell you want to~” She said, lighting up her horn and enveloping Flurry’s old, swollen and cum soaked diaper in her magic before levitating it quickly to Shining’s crotch, grinding it against his nethers with a bit of force and taping it snugly around his stallion parts.

Shining began to protest but stopped when he felt his cock starting to harden, the squishy sodden diaper being wrapped around his nethers was an immediate turn on. “C-Cadance…” Was all he managed to gasp out, the small pink diaper glowed blue and began to move up and down his length effectively jerking him off into his daughter’s old diaper. “T-That feels so good!”

While Cadance teased Shining’s stallionhood, Flurry frowned and let out a huff. “You’re not cleaning me right like Mommy and Aunt Twilight did! My kitty feels all tingly Daddy!” She exclaimed. “They made me feel really good there! You gotta make me feel good too! It’s the rules!”

The stallion blushed knowing exactly what his daughter wanted. “I’m not sure I can do that F-Flurry.” He hesitated to do what the filly asked, as aroused as he was, performing oral sex on his young daughter was crossing a massive line. “T-That’s something only big-”

Flurry looked up at Shining with big, wanting eyes. “B-but I need it Daddy!” She plead, her fillyhood now growing more wet with each passing second, the aroma of her arousal so similar to Cadance’s that it would be near impossible for Shining to resist it for much longer.

Shining felt his head being pushed forward, his muzzle now pressed against his Daughter’s nethers, the smell of her fillyhood so enticing he lost all inhibitions. Slowly the stallion ran his tongue up Flurry’s slit, collecting her sweet nectar on his tongue with each lick. ‘I can’t believe I’m doing this, I shouldn’t be doing this!’ He said silently to himself, trying to stop after a few licks before finding himself unable to.

The young filly could only let out a loud moan as her father’s tongue moved along her slit, each movement providing a wave of arousal through her body only causing more of her fillycum to leak out onto his awaiting tongue. “Y-yes!” She managed, the growing surge of pleasure in her body building quickly.

Shining used his forehooves to gently spread his daughter’s folds open, revealing the pink interior of her fillyhood. His head was growing cloudy with arousal, determined to make his foal feel as good as possible, he searched for her clit for a few moments before finding it. He placed his lips around the small nub and gave a gentle suck, pushing Flurry’s arousal into overdrive, the once clean diaper underneath his muzzle was now growing damp as it absorbed a mixture of fillycum and just the tiniest trickle of pee. “T-Tell Daddy when you have to pee, okay sweetie?”

Flurry gasped out a reply, “D-Daddy~” She managed through several adorable squeaks, “It feels funny!” Her fillyhood contracted tightly, letting loose a long stream of pee into her open diaper and onto Shining’s muzzle.

The stallion pulled away briefly when he felt the first squirts of pee soak his muzzle, he pushed his mouth further into Flurry’s fillyhood and swallowed as much of the liquid as he could. “G-Good girl!” He praised pulling away from her fillyhood, admiring the swollen diaper for a few moments. Shining had forgotten about the diaper wrapped around his cock until Cadance once more began moving it along his length, quickly reminding him that he needed his own release. “I c-can’t take much more Cadance!” He cried out in pleasure, feeling himself beginning to peak. His stallionhood quivered underneath the diaper, right before he climaxed Cadance pulled the sodden diaper away leaving his stallionhood bare. “Wha?” He stuttered out feeling himself beginning to climax, he moaned loudly watching with shock while he ejaculated into his daughter’s open diaper. Load after load of his cum landed in the absorbent padding of Flurry’s diaper and onto her fillyhood, the stallion couldn’t contain the forbidden thoughts and feelings any longer.

Without hesitation Shining mounted himself on top of Flurry and the changing table, pushing his still erect length into her tight fillyhood. Slowly he began to thrust into her, gently at first before moving faster and faster until he was pounding in and out of her burying his length in the small filly.

The pink filly let out a series of moans and squeals as she felt Shining’s member moving inside of her, stretching her fillyhood in ways she’d never felt before. With each thrust she felt a surge of pleasure move through her body and her horn sparked. She could barely contain her magic as her arousal built up inside of her. As quickly as it began however she suddenly felt a warm liquid filling her insides as the stallion above her stopped moving, his cock twitching sending several spurts of cum into her. The sensation of being filled sent Flurry’s magic overboard and her horn let out a vibrant array of colours into the room momentarily blinding everyone before they could see what had happened.

Shining Armor was no longer visible in the room; It took several moments for Flurry to look down and realize that while her new diaper wasn’t taped up, she was wearing one adorned with her father’s cutie mark right on the crotch above where her fillyhood would be. She moved a forehoof down to press against the diaper and let out a moan as she felt her bladder releasing again, this time completely emptying as she soaked Shining thoroughly with not only pee, but the mixture of his and her cum now leaking out of her fillyhood.

With another bright flash, Shining was back in his previous position above Flurry, stallionhood still inside of her but his coat was stained yellow and he was covered in their cum. “Wh-what just h-happened?” He asked in a daze.

Cadance approached the stallion and foal from behind, carrying several wipes in her magic. “You were turned into a diaper for a second there, Flurry used you quite thoroughly it seems!” She giggled, wiping the stallion free of the mixture of pee and cum. “I think Flurry could really use that diaper change now though.”

“R-right” Shining stuttered, pulling his length free of Flurry’s nethers before looking down at the previously clean but now cum dampened diaper beneath her. “W-well this was fresh when we started the change.” He said, pulling the front of the diaper up between her legs and taping it firmly shut giving it a few pats. “There you go, all... nice and dry?”

Flurry Heart moved her hind legs a bit, adjusting to the fit of her slightly swollen diaper. The filly got back to her hooves and climbed down off the changing table, “Daddy you need to change Aunty and Mommy, their diapees were more full than mine.” She let out a small yawn, her earlier nap being interrupted by Shining coming home. “I think I need a nap.” She admitted, usually fighting naptime.

“Mommy will tuck you in, sweetie.” Cadance said taking the foal by her hoof and leading her out of the room. Together they walked down a short hallway to Flurry’s bedroom, the walls were painted bright pink, her bed covered almost entirely in plushies. The mare gently patted the foal’s padded fillyhood, making her squeal a little. “Mommy will make sure you get to have more fun later, okay sweetie?” She questioned lighting her horn to pull the blankets back, simultaneously she concentrated on her daughter, a small vibrating toy materializing inside of her diaper. “Have a nice nap~” Cadance said turning the toy onto maximum before giving her a kiss on the forehead.

Flurry could only let out a small moan, she had already begun to fall asleep when she felt the toy enter her fillyhood. “G’night Momma” She managed before passing out in her bed.

*****

Back in the playroom Twilight had gotten busy trying to seduce her older brother into having some more fun. “C’mon Shiny~ You know you love my wet diapered plot!” She said, rubbing her diapered rear against his side. “We can make it more wet together!”

Shining shuddered uncomfortably, feeling the warm plastic rub against his side. “I don’t know if that’s a good idea, Twilight.” He was trying not to stare at her padded crotch but a soft hiss drew his attention. “D-Did you just…?” He trailed off unsure of what else to say.

Twilight gave a grin as she let her bladder release into the already soaked padding. “Yup!” She exclaimed as she started to slowly grind against him, the diaper growing wetter with each passing moment. “Why’s it not a good idea! You already did stuff with Flurry! She’s your daughter! Don’t you want to make your little sister feel all good Shiny?” She paused and pressed a hoof against her diaper. “It’s not just pee in there~”

The stallion blushed feeling his cock beginning to stiffen again. “I can tell.” He said softly, his nostrils flaring, taking in the scent of marecum drifting out of the sodden diaper strapped to her flanks. “M-Maybe I could give you a diaper change? Since you asked for one earlier.” Shining Armor asked moving toward the changing table, he glanced down at the diaper pail noticing several full diapers inside.

Twilight looked down at her diaper, the light pink exterior now stained completely yellow from her accidents and intentional wettings. “I think we’d both benefit from that.” She said giving the stallion a sultry glance. While walking to the changing table across the room the mare moved intentionally slower, not only because each step she took caused the soaked padding to rub across her dripping marehood, but because she wanted to give her brother a show. “Like what you see Shiny?” She giggled, climbing up onto the changing table revealing the crotch of her padding.

Shining could only stare at his sister’s swollen diapered crotch while she climbed onto the changing table. “B-both benefit from a change?” He asked, blushing a deep shade of red, not answering her second question in shame. “Where are the diapers in your size?”

“They’re right there silly.” Twilight’s horn glowed, magic wrapping around the foal sized diaper on the changing table. After a few moments the diaper grew to an adequate size for an adult mare. “I’m waiting.” She teased, spreading her hind legs apart.

“Just like changing Flurry...” Shining mumbled to himself. “Only Twilight, and so very wrong.” He continued as he lit up his horn to pull at the tapes on either side of Twilight’s diaper, blushing as the front of it fell forward with a loud thump revealing her extremely wet nethers. Several strands of her arousal still connecting the seat of the diaper to her marehood. “I’ll just get a wipe-”

“What do you mean wipes? Don’t you want to clean me how you cleaned Flurry?” The alicorn asked, bringing one of her hooves down to rub at her soaked marehood. “I’m all hot and wet down here!” She whined, spreading herself open, allowing more of her fluids to drip freely down into the diaper below.

The stallion hesitated. “That’s not really appropriate Twilight.” He said as the smell of her arousal hit his nose. “B-but maybe, I uh.” Slowly he moved his head down to her marehood and pushed his muzzle against her spread slit, tongue penetrating into the dark, wet tunnel as he began to lick up all of the fluids leaking out of it; His arousal level starting to rise again.

Twilight moaned softly, feeling her brother’s tongue ‘cleaning’ her out. “I think you like changing wet diapers.” She teased, her breathing becoming quicker while his tongue sought more of her sweet nectar. “Maybe I can help you too?” She questioned, pointing a hoof to the stallion’s growing erection.

Shining didn’t reply, he was too busy enjoying the taste of her fluids as they continued to come out of her, his stallionhood pulsing as his arousal grew from the actions. He finally gave Twilight an answer in the form of giving her clit a firm lick, hoping to send a shock of pleasure up her spine.

“A-Ah!” The mare managed to cry out between moans, her marehood was burning with arousal, fluids dripping freely into her brother’s awaiting mouth and tongue. “Shiny, I g-gotta go potty!” Twilight cried out, she could feel her marehood contract tightly around the intruder, before she came to her peak.

Suddenly Shining’s mouth was filled with waves of marecum, the sweet tasting fluid of his sister’s arousal. The stallion did his best to swallow every last bit of it, enjoying every moment of it before pulling back from her nethers, a string of cum connecting his lips to her marehood. “I th-think it’s your turn to help.” He said, his stallionhood erect and begging for attention.

The alicorn giggled, moving further back on the changing table to make room for the stallion. “Does Shiny want to put his big stallion cock in his little sister’s fillyhood?” She singsonged, heavily emphasising little sister. Her horn pulled him forward, making his cock rub against her sodden diaper, furthering his arousal.

Years of memories began flooding back to the forefront of Shining’s mind. He remembered the fantasies he used to have as a colt, of doing things like this with Twilight when she was still struggling to stay dry at night; Even remembering the few times where he managed to encourage the filly to use her diaper on purpose, changing her, then using the warm, wet diapers to pleasure himself knowing he could never get away with fucking Twilight, until now. “D-don’t stop doing that!” He exclaimed as his length rubbed against the soaked padding, the warm, wet mixture of pee and cum lubricating him and teasing him further.

The mare did as she was asked, using magic to rub her soaked diaper against his stallionhood, her own arousal pooling on the plastic cushion of the changing table. She gently took hold of Shining’s throbbing erection and guided him inside of herself with a soft sigh of pleasure. “I know you always wanted to do this.” She whispered in his ear, “I wanted you to make me cum in my little filly diapers when we were foals.” Twilight felt him begin to thrust into her. It started slow, with only a few gentle thrusts, before picking up into a steady rhythm.

Shining continued to thrust at Twilight’s marehood, his erect stallionhood moving in and out of her as he began to pick up the pace, his thrusts became stronger and more frequent, his length pulsating with each thrust. “I always wanted to fuck you Twi.” he managed between thrusts, his arousal growing stronger with each passing second.

Each thrust drew the two ponies toward their approaching climaxes, Twilight groaned with each thrust, her arousal coating her niece’s changing table, several droplets even landing on the pile of fresh diapers below her. “I’m f-feeling funny in my kitty, Shiny!” She cried out her hind legs shaking with need. Her horn began to shoot sparks from the tip, a telling sign of the alicorn’s approaching orgasm.

Not letting up, Shining continued to thrust into her, hilting his length in his sister’s pussy as he felt her clench down on his length, still thrusting when several gushes of her cum rushed out around his cock before he gave one last, strong thrust into her, pouring his seed deep inside of her marehood as he collapsed onto the changing table. “Th-that was amazing Twily.”

Twilight panted, her brother’s seed dripping out of her marehood every few seconds. She felt Shining Armor pull out and slide the fresh diaper underneath of her plot, pulling the garment into place around her crotch. “That was incredible Shiny! You lasted so much longer than I thought you would.” She blushed looking at her old diaper still on the changing table.

“Yeah.” He replied as he finished taping the new diaper into place around his sister before relaxing on the changing table. “At least it wasn’t a fantasy this time. While I did it with your wet diapers...” He said with a blush.

The alicorn giggled, “Why don’t you wear my wet diaper? I know you want to.” She teased climbing off the changing table, stretching her hind legs and rubbing at her padded crotch for a moment. The mare let out a soft sigh, a loud hissing noise breaking the silence while she wet the fresh diaper. “S-Sorry, I had to go potty the whole time we were having fun!”

Shining blushed while he watched Twilight wet her diaper. “You always did prefer them wet, even when you insisted you were big enough to use the potty.” He commented watching her magic begin moving the soaked diaper around to his plot. The stallion could feel his rear being lifted up and the sodden diaper being put into place under him before he was lowered back down onto it with a squish. His muzzle turned even redder as his erection began to grow again as the front of the cum soaked diaper was pulled into position before taped shut after having his tail threaded through the tail hole. He sat up on the changing table, feeling the diaper squish under him. “It should be good for a little while longer.” he said before climbing down and giving Twilight a hug. “Let’s wait for Cadance to get back, then we can have some more fun with her.”

Bonus Chapter: Part 3

Flurry’s Playdate
Part 3

Written By:
Midnight Shadows
Snow Blitz

Twilight opened Flurry’s bedroom door, the room was dimly lit and the night sky was visible through the window. The purple mare made her way over to the filly’s bed, each hoofstep bringing a familiar crinkle as her slightly damp diaper moved with her body. “Flurry, sweetie, you overslept! Your nap should have been over hours ago!”

The Alicorn filly mumbled, slowly waking up from her extended nap. “Auntie Twilight?” She asked still feeling the gentle buzzing of a vibrator inside of her soggy diaper. “I think I need a change.”

Letting out a small giggle, the mare’s horn lit up a brilliant purple as she gently lifted the filly out of bed. “Hmm, looks like you could use some fun first!” She said enthusiastically as she pressed a hoof into Flurry’s soaked diaper, pressing it firmly against her fillyhood.

Flurry Heart moaned, feeling the padding press firmly against her tingling nethers. “T-That feels good! Can you take the buzzy toy out of my diapee first? It’s starting to make me feel really funny…” The filly said with a small giggle, feeling the exploring hoof gently rubbing her.

“Of course sweetheart.” Twilight replied, laying Flurry down on a nearby changing table. She used her magic to turn the lights on in the room, more thoroughly examining the filly’s diaper. “You look like you had a lot of fun while you were asleep! I don’t think that’s all pee.” She teased pulling open the tapes of the diaper; The soaked garment falling flat on the table with a thud revealing the wet, pink coated nethers beneath it. “Somepony enjoyed their new toy~”

The pink coated filly let out an excited breath, the cool air of her room brushed against her soaked sex making her shudder. She felt her aunt’s hooves running along her hind legs, slowly working their way towards her toy. “Mommy said little fillies should have special toys to put in their diapers!” She said shifting around on the opened diaper, her fillyhood winking at Twilight causing a small stream of fillycum to dribble out around the small vibrator. Flurry’s eyes fell on her caretaker’s diaper, noticing that it looked much wetter than before her nap. “Your diapee is all wet too~” She teased with a foalish giggle.

Twilight’s muzzle turned a faint red. “It’s only a little damp, thank you!” She said defensively. “Not nearly as wet as yours is!” She paused bringing a hoof to her rear giving her diaper a few pokes. “In fact I can’t even really feel it, And I know I didn’t pee yet!” She explained as she used her other forehoof to gently rub along the edges of Flurry’s slit; She gave a small tug on the toy inside of the filly, giggling at her response.

Flurry squeaked feeling the toy being tugged out of her, once the toy was safely out of her, she let out a sigh of relief. A small shudder ran up the filly’s spine, her hind legs quivered for a moment before a small stream of pee hit the open diaper. “O-Oops, I thought I had already peed…” She said sounding a little upset that she’d had an accident so blatantly.

“That’s okay, that's why you wear diapers! Because you can’t control when you have to pee~” The mare teased, lifting the vibrator up to Flurry’s muzzle. “Give it a kiss for good luck!” She exclaimed, watching the filly doas she was told. The vibrator levitated to Twilight’s rear, her magic pulling her diaper aside before she slowly inserted the vibrator into her own moist slit and turning it to high before returning the diaper to its normal position. “There we go, I’ll let you play with it some more later.” She said, lowering her muzzle down to Flurry’s nethers and sticking her tongue out. “First let’s clean you up!”

The filly moaned loudly when she felt Twilight’s muzzle brush up against her fillyhood, she could feel the mare’s experienced tongue exploring her tight depths. Each thrust of her aunt’s tongue brough more squeaks, followed by moans. Flurry could hardly contain herself, her hooves grabbed onto the changing table as her orgasm rapidly approached. “W-Why’d you stop?” She asked feeling her aunt pull away, a sticky trail connecting the two.

“We’re going to try something new that’s all~” Twilight replied, she grabbed a hold of her niece’s soaked diaper, examining it closely for a few seconds. Slowly she brought the padding to Flurry Heart’s leaking fillyhood, pressing it hard against her. “Doesn’t that feel nice? I bet we can make it feel even better!” She teased, rubbing the diaper up and down the foal’s slit.

Flurry suddenly felt a jolt of pleasure move through her body, resuming the immense amount of pleasure that she had previously been experiencing. “Th-that feels really good!” She squeaked, her fillyhood winking under the soaked garment.

The alicorn mare smiled, feeling her marehood growing warm underneath her own diaper. She let out a soft sigh, feeling her bladder releasing into the slightly damp padding. “It’s not fair if you’re the only pony who gets to be all wet!” Twilight cheered happily, her horn glowed with magic, the filly’s diaper moving up and down her on its own. “I’ll help more in just one second.”

Gasping in pleasure, the pink alicorn started to thrust her fillyhood into the diaper that was grinding against her, she now badly needed release and was getting desperate. “I-it’s hot and tingly Aunty Twily!” she managed, fillycum leaking out of her and beginning to further soak the already swollen diaper.

Twilight increased the speed of the rubbing, the squishing of sodden padding filled the spacious bedroom, along with the whine of a needy filly. “You can’t cum yet, sweetie, I still haven’t made my diapee sticky yet~” She gasped out, the vibrator buried deep in her marehood finally bringing her own release. Her hindlegs quivered as the orgasm ripped through her body, marecum flooded her now soaked padding, mixing with the residual fillycum of her niece. The mare clutched her hooves around the changing table, it was all she could do to stay on her hindlegs.

Flurry stared in awe as she watched Twilight’s diaper grow darker and start to sag as it was filled with her marecum, the sight for some reason made her fillyhood tingle more as the diaper rubbing against her crotch started to slow as her aunt began to lose focus. “D-don’t stop! You gotta keep going!” She protested, her tail twitching from side to side and her body trembling at her incredible need to cum.

The mare finally came down from her orgasmic high, she knew it wasn’t fair to leave her niece hanging on the precipice like she had. “D-Don’t worry sweetheart, I’m not done playing with you yet. It’s not fair that I got to cum and you didn’t.” She soothed, stroking a hoof down the foal’s chest to her diaper. Slowly she pulled the diaper away, revealing the sticky mess that was Flurry’s fillyhood. “Oh my, somebody is a very sticky little filly!” Twilight teased giggling.

The cool air of the room suddenly hitting her fillyhood cause the filly to squirm, her slit was tingling and a great warmth had built up inside of her, all she could think about was how badly she wanted to move onto the next part of the ‘game’ and get her reward for being such a good filly. “Twily!” She managed as her vagina winked again, now in open view to Twilight, several small droplets of cum leaking down onto the changing table.

Twilight had teased the filly long enough, she licked her lips and dove back in. Her mouth closed over the foal’s crotch, her tongue slipping inside for a few tastes before she found Flurry’s clit. Now that she’d found her mark, Twilight suckled on the small pleasure nub, trapping it in her mouth until her niece couldn’t take anymore. She pulled away just in time for the first two squirts to land on the changing table, realizing the mess they were making she pressed the diaper against Flurry. “That’s it, good girl, let it all out~”

Words meant nothing to Flurry at this point, she was riding out one of the more intense orgasms she’d had yet, the sudden wet warmth of the diaper being pushed firmly against her fillyhood made the feeling even better as she let out squirt after squirt into the open diaper, her body shaking and her horn sparking in pleasure as she released, soaking the diaper with so much fillycum that it began to leak out into the changing table.

Twilight continued to rub the diaper against Flurry, each rub more gentle than the last. “Somepony definitely needs a fresh diaper now!” She smiled, her maternal instincts overruling her foalish behaviour for a moment. Ever so slowly she pulled the now leaking garment away from her niece, taking a deep breath the mare planted her muzzle into the cum soaked diaper. She couldn’t help herself, the scent, and the taste was too much to resist. Her tongue lapped up the fillycum that had pooled on the surface of the absorbent padding. Slightly embarrassed at her actions she pulled the diaper from her face, which was burning with blush.

The filly took several deep breaths as she came down from her orgasm, her eyes were closed as her body recovered, slowly she glanced to Twilight who had just planted her muzzle into the soaked diaper. “That’s silly Aunty Twily!” She managed, looking down at herself on the changing table. “I think I need a new diapee now.”

“Yes, you do.” The alicorn mare said rolling up the old diaper and placing it in the diaper bin. She reached down to the shelf below the changing table and grabbed one of the many thick purple pullups from the shelf. She smiled to herself, knowing just how much Flurry would love the idea of wearing ‘big filly diapers’. “Since you’re such a big girl now, why don’t we try Pullups? I can make them vibrate when wet so you know you’ve been a good filly!”

The filly frowned for a moment. “Pullups? But I wanna wear diapers!” She paused; “Can they be big filly diapers instead? I can be a big filly and still wear diapees!”

Twilight giggled nodding her head. “Of course they can! I’ll tell you a secret too, Pullups are just big pony diapers with the sides attached.” She explained, preparing to slide the garment up the filly’s legs when the door suddenly opened.

Standing in the doorway, Shining Armor stood, rubbing his head, his sister’s cum soaked diaper still taped tightly around his rear. “Twilight, I think we should really try to find out what’s wro-” His sentence was cut short as his body was enveloped in a purple aura.

“And I know just the pony to help show you that they’re just big pony diapers!” The alicorn exclaimed as she concentrated on her brother. “We’ll just save this for later.” She said as the sodden garment was removed from him.

Shining Armor was unable to do anything, he wanted to protest what his sister was doing but for some reason he could no longer speak. The stallion could feel his body starting to turn into a plastic material and his legs turning into some sort of elastic. Before he could realize what was going on, he looked more like a pullup than a stallion. His last attempt to fight the change could be seen as his face was pulled into the seat of the garment, now becoming the interior absorbent core, conscious of everything going on and even still able to see.

The purple alicorn smiled as she observed her work, a purple pullup just like the one that she had originally taken off the shelf, the wetness indicators now included Shining’s cutie mark among the foalish designs. Slowly she started to slide the pony turned diaper onto the filly, her arousal level already rising knowing that her brother would be staring at Flurry’s fillyhood until she decided she had to go, and even then he’d have to wait until Twilight chose to change him back.

Flurry smiled, watching the diaper being slid up her legs and into place snugly. In truth these pullups were rather thick and were glorified diapers with easy open sides. “These are super soft!” She said with a giggle as she tried to close her hind legs. “Feels like a really thick diaper!”

“If we want to continue playing games, you have to prove you’re a big filly by staying dry for a couple of hours okay? I won’t be upset if you pee a little bit, I know you get really into playing with your dollies.” The mare explained, helping the alicorn filly down off the changing table. “We can change my diaper later~”

“But if I gotta wear big filly diapers so do you!” Flurry insisted. “You gotta prove you’re a big filly too! Cause you’ve been wearing diapees like me so you gotta prove it too!” She exclaimed with a squeak. “I can help you change! Mommy says I’m really good at helping change myself when she changes me!” She said, pushing one of her forehoofs firmly into Twilight’s padded rear.

“My diaper isn’t full enough for a change, sweetie.” Twilight said firmly, her body shuddered in arousal when the hoof was pressed into her nethers. “W-why don’t you play with your toys for a little while? We’ll play our fun new game in a little while.” She said trying to ignore the hoof that was now rubbing her padding.

The filly frowned but removed her hoof from the mare’s padding and began to play with her toys, it wasn’t long however before she felt the need to go once again. “Aunty Twily! I gotta go potty!” She announced, her voice squeaking, bringing herself to her hooves quickly.

The Alicorn mare glanced at Flurry’s thickly padded crotch and smiled. “Well, does little Flurry want to use the potty like a big girl?” She asked, leaving the room for a few moments, only to return carrying a pink training potty.

Flurry opened her mouth to reply before quickly closing it, taking a step back in hesitation. “W-well you said I had to so we could keep playing our game!” She said, clearly torn between going in her diaper and using the training potty. “Do we still get to play if I use my diapee?” She paused. “Uh, Big Girl PullUps!”

Twilight placed the potty in front of the young filly, seating her on top of it without removing her diaper. “I didn’t say you had to go in the potty!” She said giggling, “But if you hold it for a long time it’ll make it feel really good when you go~”

Now struggling with holding her bladder, Flurry blushed deeply as she was seated on the potty, the shape of it pushing the padding against her rear differently than a normal chair would. “I d-don’t think I can hold it longer...” She struggled. “Mommy never had me hold it this long!”

“Did Mommy ever play this game with you?” Twilight asked, one of her forehooves snaking down to her crotch. She couldn’t stop herself from rubbing, the sight of her niece struggling to not soak herself was very arousing to her. “Soak your big filly panties for me, okay sweetie?”

Nodding, the pink filly let out a small sigh in relief as her bladder released in what could only be described as a voluntary loss of control as her muscles gave out. A loud hissing noise filled the room as her pullup started to swell; The training liner inside ensuring that she felt what she was doing in her diaper as the wetness spread over her fillyhood. The sensation was rather strange, the pullup was not only enforcing the wet feeling, but it was also starting to send small vibrations of pleasure into her slit. “Th-that feels... Good.”

“It’s going to feel even better soon.” The mare said lifting the filly off the training potty. Twilight set her down on the floor and closely examined her now soaked pullup, one hoof gently prodding the seat and crotch of it. “All squishy and wet! Now let’s have a little more fun.” She said unfastening the sides of Flurry’s diaper.

Flurry let out a long moan as the pleasuring sensation was slowly pulled away from her fillyhood, her diaper now open and exposing her to the cool room. A small trail of sticky fluid connected the base of her vagina to the inside of the now vibrating pullup. “What are you doing? I thought you said that the diaper would make it more fun!”

Twilight lit her horn once more, slowly pulling the pullup away from Flurry’s fillyhood. She began unfastening the tapes on her own padding, sliding it away and replacing with the soaked pullup. “We’re just changing each other! I’ll wear your big girl diaper, and you can wear my little filly diaper.” She explained while refastening the sides of the pullup. Slowly her old diaper wrapped around the foal’s crotch. “We’ll put your special toy in there too.”

The filly watched as Twilight pulled the toy out of her own slit, now covered in their combined fluids. She felt her, or rather Twilight’s old diaper being pulled to the side and let out a loud gasp as the toy was suddenly thrust into her slit, sinking deeply into her, still vibrating on the high setting that she had yet to experience. The vibrations were so intense that as soon as her diaper was pulled back into place her back arched and several squirts of fillycum shot into the seat of the already soaked garment, her slit winking as the sticky fluid started to pool, coming out of her faster than the soggy padding could absorb.

“Good girl!” The Alicorn mare praised, feeling Flurry’s old pullup beginning to vibrate intensely. She squeaked, her slit still incredibly sensitive from the powerful orgasm she’d had only a short while ago. “W-What are you doing s-sweetie?” She cried out, her hind legs beginning to shake violently.

Flurry continued to convulse as her orgasm continued, the vibrating toy prolonging her orgasm as it sent more shockwaves of pleasure up her spine. Between breaths she managed a few words. “F-feeling good!”

Twilight struggled to comprehend what her niece had said, her orgasm was overpowering her body to the point of complete and utter bliss. Without realizing it, Twilight’s tail flagged and her hind legs bent, her control over her bladder and bowels failing her; The thought of filling the pullup like an unpotty trained foal sent her spiraling down into intense bliss with a stronger orgasm. Realizing that not even Flurry had that sort of accident. In her current mindset she realized she was acting more like a foal than her young niece. That was the most powerful, arousing thought she’d ever had. She came down from her orgasm, realizing she’d completely filled the garment like a foal.

As both ponies came down off of their orgasmic high, Flurry let out a small giggle. “You went potty! I guess I am a big filly and you’re not!” The filly said, rubbing the front of her cum soaked diaper with a hoof.

“Sorry Shiny...” The alicorn mare said, simply blushing sheepishly as she looked back at her full pullup. “It was an accident!” Was all she could manage as she regained her breath.

The End!