Author's Note

Okay, things to clarify: the diaper scene is labeled, but it is relevant to the story. It's used like any other piece of clothing, so no need to worry about that. It's weird, even for the tone I've already established.

Well, the story's not going to read itself. Go on then.

Ace (Diaper [there's, like, half a scene at most])

Twilight was drawn to a close. Its uncertainty gave way to definitive dawn. Miss. Sparkle bore witness, but only in passing. The morning rituals bound her to the mundane. It was a frantic knocking at the door that lured her away from her chores. Said door opened to reveal an exhausted bunny. Twilight was confused at first, until, "Oh stars!" recognition meet her.

It was still early morning when Angle bunny took a break from eating the greens Spike prepared. He was having trouble making out Anele's miming, especially for his still-blurred, morning vision. The thing started with miming a unicorn as if that would do anything to narrow down the ponies that could be involved. Next, he portrayed a pony on top of another, but one was facing the wrong way, and then- He found himself in the Golden Oakes' basement.

Twilight whipped some sweat off her brow and thanked the stars for the practice she made with teleportation. Spike was due for 'the talk', but that could wait until after the crisis.

"So, let me get this straight," Twilight said as she rubbed her temple, "Somepony barged into Fluttershy's room and-" she paused, "had their way with her."

A simple nod from Angle demoralized Twilight who responded with a sigh and a lament of the lack of normalcy in her life, but waisted no time cantering over to her friend's cottage.

The interruption in Trixie's stride was getting impatient at her lack of answers, "A stroll? You? At the crack of dawn?"

"Care to join me?"

Rainbow Dash was very tempted to say no, but she sounded so genuine. Besides, it'd be best to keep an eye on her when she can.

However, upon her approach, she noticed an unnatural shine on Trixie. A furless blue canvas. And her sticker cutie marks were another surprise. As she strode, Rainbow Dash had not even realized she had been tracing that hunger-inducing, heart outline until she heard a whistle.

When Trixie turned, Rainbow gave her a look that asked for an explanation.

"Do you whistle all the mares you meet?" She asked, only to compound Rainbow's confusion.

"What?" she asked with a crack in her voice. A crack that reminded her of something that demanded her attention.

"Isn't that precious? You don't even realize."

Finally, the truth made itself known to Rainbow. She was the whistler. The realization had little meaning though, as Rainbow had better things to occupy her mind with. A great and powerful annexation by Trixie's derriere took precedent. Like most conquests, this one was messy. The slime of passion was steadily dripping out Rainbowdash's own backside.

Rainbow never noticed the strangeness of Trixie's tale as it compressed itself into a single shiny strap. The presence of pressure around her neck was equally irrelevant. Not even the white leather leash binding her to never stray from her watch over Trixie's bounty. "That's what mama likes to see, Dashy," Trixie lovingly encouraged "You know exactly what to look for in a mare."

"It's all about the ass," she hypnotically continued, "That's how you tell who the best pony is."

Dashy found herself nodding along. As she nodded, the leash tightened, as if to reward her with a better view she was still too nervous to take for herself.

"Oh, but ponies that aren't so good need to do what the good ponies say."

Another nod. Another reward.

Trixie stopped, but Dashy didn't. Trixie felt Dash bounce off her jiggling right cheek. A slight laugh escaped her at the idea that Dashy could miss the honey-pot while under such focus. Dashy tried to correct her mistake only to feel a sharp tug at her neck, "No, no, no, Dashy," that condescending, pussy-poping tone of voice, "You were always right. It's the cheeks you want. You want to kiss and lick and press against mama's fun-pillows."

So she did. A hug turned into a massage over that glorious texture. When the feeling overwhelmed her, she gave long licks up the cheeks and shuddered at the sight of it jiggling back into place. Trixie could not contain her mirth when Dashy escalated to a full-blown makeout session with her ass.

"No," Trixie finally stated at the end of her laughter. Dashy had only realized that her hoof was hard at work pleasing her cunt when Trixie's command made her yank it back into a standing position. That act of restraint begot another. Taking a step back, she switched to giving gentle kisses and watching with hunger at every ripple following her contact.

"Mama loves to see you obeying better ponies."

Dashy's hind-heart throbbed and thrashed in frustration. A subservient mare would have left it at that; resigned herself to pleasure a 'better' pony at the expense of her 'worse' self. Lo, it is not in her nature to give up. So, she looked within her ego for a way out as she let her body automatically perform its responsibility to Trixie's ass.

[Diaper]

A dialogue formed within her mind. 'Trixie's ass was great,' Dashy admitted. It was a necessary inch of ground to give up in order to regroup the rest of her mind. 'Yes,' a primal part of her agreed, 'But it could be better.' Her civilized parts scoffed. They could not believe how ungrateful, how spoiled, or how disrespectful Dashy's primal side was. Her ego, just eager to get out from under Trixie's ~~hoof~~ ass, begged her primal side to point out any flaw it could. 'It wasn't shiny enough' her primal side explained sagely. Her higher functions answered with a request that we polish it more diligently.

Dashy was starting to get frustrated at how long she had been eating Trixie's ass. 'We shouldn't half too,' her primal mind realized. 'If it secreted a lotion-like substance, then it would never tarnish, and the view wouldn't be exclusive to the polisher.' Her higher functions had no answer to that, but the ego did feel a draft on her own backside. 'Also, it is big, but it could be bigger. Something of this grandeur should be as difficult to miss as possible. It should stick out even among a shifting crowd. Finally, it had very little audio sensation to it. It squeaked and groaned like a lover in the throes of passion, but it wasn't loud enough and was silent when it wasn't being diligently loved,' like Dashy was doing right now. Her primal mind's concerns would become a bigger problem if she were to ever resign as Ass Polisher.

Finally, all parties within her agreed, to be a better pony than Trixie, her ass would need to be: constantly shiny, stand out enough to be unmissable, and maybe a little softer, if she could manage; something ponies could really bury their faces in. With that, Dashy felt her center of mass shift. That must have been it. The debate within her had manifested by some unknown mechanism. Trixie had not allowed her to look away, but Rainbow was confident that she was the better pony now. Having outcompeted her mistress, Rainbow slipped out of Trixie's leash-tale and beheld her achievement.

A sheen of plastic gleamed around her soft diaper and advertised her inspiration with Trixie's cutiemark. Its mass of goodness cradled her from her tail all the way past her belly. Even her wings were engulfed, but it wasn't such a big loss as her diaper lifted her into the air. Whatever exactly was giving her lift was at the edge of her giant diaper, keeping her upright. With all her weight focused on her pride and joy, she noticed a pleasant humming stoking her burning need. The sound from the vibrations never escaped the terrific padding, keeping them secret. That was about as far as the secrets went. Endless crickeling cascaded from her butt, begging to be known. When she gave it an experimental squeeze, she felt soothing baby oil coat her forelegs. Now the shine of her diaper would never dull, and it felt nice to touch as if anypony needed another reason.

[Diaper]

With not an ounce of speed lost, Rainbow shot into town. One pony was not an audience worthy of Rainbow's posterior. She needed dozens of hooves on that big butt.

When the shock finally wore off, Trixie broke down into rolling laughter. It took some time to chortle through the absurdity before following her into town, "Of all the things to happen. First thing in the morning, and I've already broken my record for crazy."

While chaos entered the town, the orderly Twilight left. She was in such a hurry that she forwent Fluttershy's small bridge in favor of a more direct leap over the brook. She had already formulated every step she could to put a halt to whatever violation had befallen her friend. All that was preventing her from solving the problem, as she perceived it, was her distance from it.

What Twilight could not have known was the cacophony that awaited her on the destination of her teleport beyond Fluttershy's door.

The decorations were first to filter through her mind. Heart balloons were a little suspect. The- Twilight's eyes narrowed at the phallic balloon. "Was that supposed to be somepony's-? What the hay was going on in here?!" Her eyes then grazed a swirly balloon and when she tried to move on they refused to stray. Instead, she had to follow an arm of the spiral all the way around and around until her eyes were let loose at the edge- "Welcome to our Fluttershy par-!"

"Gah!" Twilight lept along with her heart. She was briefly reminded of a crocodile waiting in a water hole. "Pinkie!" She spoke through gasps, "You! Need! To! Be! More! Subtle!"

"Sorry, Twiliy Wiliy! I'm just so excited to finally get to throw Fluttershy a party without it being her birthday!"

"Ah, not again," Twilight interrupted as her eyes caught another spiral balloon.

"What? I thought you loved my Fluttershy parties. Look how much fun she's having!"

"I'd love to, especially since that's why I'm here, but this stupid balloon. I'm about a third through, give me a moment." As Twilight spoke she sounded more distant and lazy with her inflection. The idea that Fluttershy was having fun stuck in her mind.

Once she was out, instead of risking another trip down spiral lane, she kept her eyes closed, "Can you guide me over Pinkie? I don't want to look at another balloon."

"Okie Dokie, Twilight! I know my Fluttershy parties aren't for everypony, that's why they're Fluttershy parties and not everypony parties."

"Ah!" When Twilight finally opened her eyes, she was shocked again to see the plastered-on grin of a shinny Fluttershy balloon. "No, Pinkie. I'm looking for the real Fluttershy," Twilight explained. She sounded a little more condescending than she wanted to, but Pinkie would understand. She closed her eyes expecting to be led somewhere else.

"Oh, but I am the real Fluttershy," came the low-pitched, sing-song voice she had come to know and love. When she opened her eyes again, she saw the smile was different. It was still just as manic, but her teeth weren't barred this time, and her eyes focused on her own. Now that she looked for longer she noticed it was rocking back and forth rhythmically. It gave the illusion of her dopey smile getting larger and smaller as it rocked closer and further from Twilight's eyes. Her head also seemed much larger. Well, her whole body seemed larger, as Twilight gazed across her friend's swollen curves. Suddenly things made a lot more sense. The rocking back and forth, that strange instrument in the music, the story of Angle bunny was trying to get across; All of it had an answer.

That answer was Applejack bounding on Fluttershy's intimate area like a trampoline.

"I'm dreaming!" She blurted out, "That's the only reason you all would be okay with this- whatever you call this! I'll be awake soon, and forget all about this in moments!"

"Oh, ah," She squeaked out in the throws of passion, "this is a dream come true, Twilight! But, mhm, I don't think you un-understand. Ha." Fluttershy felt like she was a lot more used to her current state. Her thoughts were still so bouncy, and slippery, and full of energy, but she felt like she could catch up if she did some bouncing of her own. "Please come a little, oh, closer. I, ha, can explain." Fluttershy had some doubts if those words were really hers, but couldn't keep up with the follow-up thoughts. She wasn't quite ready to catch those yet.

Twilight, still holding some instinctual trust for her friends, did in fact lean closer, "Pinkie, hm hm hm," Fluttershy said, "could you give her a little push."

"Wha-" was all she could say before she was muffled by the inside of Fluttershy's mouth. It felt very smooth and soft, like a slightly underinflated balloon. Twilight tried to escape, only for her rear to be held firm by Pinkie.

"Ha, hitthle har-er hleas," Fluttershy mumbled around Twilight's head.

"Eye, eye party girl!"

Twilight tried to ignite her horn for a teleport, only to sputter as Fluttershy's interior shocked it, disrupting magic her built-up magic and sabotaging the spell. She kicked, but with Pinkie's entire upper body pressed to her rear, something Twilight tried not to think about, let alone the fact that she's being trapped in her good friend Fluttershy's belly, there was nothing in range to kick. Down her throat, Twilight was snaked through. With a mighty gulp, Twilight was ushered into the apex of pressure. Within Fluttershy's belly, Twilight was enraptured in a hug from all angles, even the ones that really shouldn't be involved in a hug.

"Oh, I think, oh yes," Twilight could hear from all around her, muffled by the excessive air padding around her, "she's stuck. Could you pretty please-" she stopped to give a loud shrill of satisfaction which Twilight failed to shut out, "go down to help her along?"

"Oh, a trip through the bouncy house? Yes please!"

The giggling ball of energy slid down with enthusiasm. When she reached Twilight, who was being rocked along with Fluttershy's body, she went to push her butt instead of the legs that were closer. Twilight then wondered if this was Pinkie's way of hitting on her. She didn't seem to have any interest in Applejack and Fluttershy.

Instead of going further down, she was pushed up and around into a U-turn so she was resting on her back, not that gravity meant much in this grip. What did matter was that her own love button was directly beneath Applejack's hooves, sending Fluttershy's subsurface to rub her virginity. With Twilight locked in, Pinkie snaked her way out through some way Twilight couldn't guess.

Here, Shy's pressure was so thick that Twilight's limbs were pinned and slowly forced to spread out. She was amazed that she could still breathe. Some method had to be in place to leek out some of Fluttershy's air into her inner chamber. Thankfully, her friend was pretty transparent, bathing her world in a solid yellow. The smell brought her mind to an obscure substance. This had to be some form of latex that was more elastic and transparent. Resin-rubber was rare enough, let alone this variant. Whoever had created this curse must have been quite an expert herbalist, which would explain why she would go after Fluttershy first. "And a massive pervert!" Twilight shouted as the constant rubbing against her marehood recaptured her attention along with Fluttershy's perverted chorus and all the decorations. What most engendered her blush had to be her friend Pinkie's markings. It was clear that whoever was behind this had gotten to her too, as opposed to the theory of 'Pinkie just being Pinkie' she was running on before.

Twilight, not having anything else to do, drank in the ridicule Pinkie wore so casually. When her eyes read 'Eye's back here,' they had to obey, much like the spiral balloon. Her eyes followed the arrow, across her body all the way to her butt. This time there was no spiral to led her out. The culprit must have been an expert in psychological curses as well as physical. The analysis had ended there, though, and Twilight was forced to live in the reality of being pinned down by one of her friends, molested by another, and forced to visually molest yet another. And then Pinkie started dancing, dragging Twilights eyes with every movement of her butt.