The Vulpecula went waddling off in the direction of another town, where a large barn sat amongst a field of apple trees. Inside the barn, an orange earth pony lay snoozing, having worked herself to sleep attempting to store the large barrels full of cider. The pony muttered to herself as she pulled her hat down over her eyes more, trying to get some rest.

In her dreams, Applejack was doing much the same thing as she'd been doing before falling asleep – though it was bright daylight, while she'd been working late at night before.

She pushed another barrel into place, nodding with satisfaction, and tapped it twice to hear the note and make sure it was still properly airtight.

“Good start, ah reckon,” she announced, and turned ready to move another barrel into place – when a familiar pair of voices made her stop and blink.

Then she groaned. “Ah, tarnation… ah'll have t' deal with those hornswogglers agin...”

Some way off, on the road outside Sweet Apple Acres – not quite on Apple land, but close – the two salesponies Flim and Flam were announcing to a crowd of Ponyville's ponies the virtues of their newest product.

“You'll realize you never could have done without it!” Flim said.

“And you'll do things you never realized you could!” Flam concurred. “The Miracle Suit is a true one-of-a-kind, marvellous, prototype, exclusive piece of the latest technology!”

“Fine-fitting!”

“Form-quality!”

The salesponies shared a look, then both smirked and went right back to their spiel.

“It's a diving suit! A protection suit!”

“A fashion statement! A space station!”

“It's the most wondrous garment Equestria's ever seen!”

Applejack came cantering up. “Now, hold it, all y'all! Ah thought ah told you that ah didn't want to see y'all around these here parts again!”

“Did she, Flim?” Flam asked.

“I don't recall, Flam,” Flim replied.

“There was something about the cider season and super squeezy,” Flam pondered. “But that's all water under the bridge!”

“Well, perhaps not,” Flim said. “After all, if she would do the honour of taking part in a demonstration, we won't charge her for the Cider Squeezy!”

Applejack was already feeling confused. “What?”

Flim waved a hoof dismissively, chuckling softly. "Now, now, you needn't be shy, there's nothing complicated to it at all! You simply put it on, and presto! The miracle suit works its magic!" The stallion wrapped a hoof around Applejack's neck, pulling her up onto the stage. The farmer pushed the salespony off of her, stepping back.

"Consarnit, just hold up! Charge me for the Cider Squeezy? You lost that competition fair and square, you were run outta town!" She shouted. Flam laughed, pulling Applejack in again, leaning into her a bit.

"Applejack, please, there's no need to come up with all these silly fabrications. You can see the famous Squeezy right over there!" Flam pointed towards the fields where Applejack could see Big Mac pouring a bucket of apples into the Super Speedy Cider Squeezy 6000, a barrel of cider quickly being made by the machine. Applejack stuttered for a bit, completely baffled by the sight. "B-but, I...?" Flam pushed Applejack towards the center of the stage, causing her to stumble about.

"Now, observe fine ponies, the wonders of the Durable Double Diapered Dirigible Miracle Suit!" Flim proclaimed. Before Applejack could react, she was surrounded in the emerald glow of Flim and Flam's magic, lifting her into the air as a smooth rubbery suit was pulled off of a nearby mannequin, floating over to her. Applejack struggled against the magic, kicking in the air as the back of the suit was unzipped. Her hooves slipped down into the sleeves, her tail flicking as she tried to avoid being suited up. Despite her struggles, however, she was quickly slipped in, leaving her standing center stage in a shiny, squeaky suit as the two salesponies stood beside her, grinning widely. "Now, how does that suit feel, my fine young pony? I should hope quite comfortable!"

“It don't!” Applejack replied quickly. “And it don't matter how it feels, this ain't right! Let me go!”

She felt a faint zrrrp up her back as the suit's zip was pulled. “Observe, how the Durable Double Diapered Dirigible Miracle Suit fits as snug as a vacuum seal! There's no risk or danger of losing your position, or your suit, no matter the position of the suit!”

Applejack was fairly sure that was Flim who'd just said that, and a moment later Flam took up the conversation. “Now that the suit's secure, we can demonstrate all the features! Firstly, the Durable Double Diapered Dirigible Miracle Suit is a fine diving suit! Flim, the pool!”

The unicorn used his magic with a flash, and suddenly there was a huge, transparent glass pool on the stage. It was full of something fizzy, something which wasn't water but which looked an awful lot like cider.

Flim and Flam began singing some kind of song or other about the suit, but Applejack couldn't care less. She sat down with a huff, and crossed her forelegs – staring at the Super Speedy Cider Squeezy 6000, trying to work out what was going on, until barely two seconds later the brothers reached the end of a verse.

And, with a joint telekinetic heave, they threw her into the cider.

There was a hiss as something inflated around her muzzle, providing her air to breathe and keeping her from drowning. A little cider filtered in, and Applejack snorted.

Faintly, though the glass wall and the cider, she could hear Flim and Flam talking about the outfit as a diving suit.

“Big jumps!”

“Long trips!”

“Deep dives!”

“From ships!”

They started talking about how the suit's internal buoyancy was set up to counteract her own, and Applejack had to admit that the durn thing did seem plenty easy to walk in underwater.

Then a magical tendril reached out and pulled the emergency ring just above her fetlock. The suit inflated hugely in just a moment, turning from a relatively slim diving suit into a hugely puffed-up suit with a big, puffy rear and hard-to-control limbs.

That darn song was still going, as Applejack blushed and tried to pretend she wasn't there.

Applejack wobbled in place, trying to keep her balance with her newly thickened suit. She took a few steps, her legs pressing into the belly of her suit and eliciting several soft squeaks as she did. Her hips swung left and right slowly in the cider as the suit spread her hind legs apart into an awkward stance. Looking through the front of the tank to see the two brothers performing some silly dance routine, Applejack started to move towards one end to attempt to pull herself up. Unfortunately, the top of the tank seemed much higher than it had been before. Bending her legs as much as she could in the suit, Applejack attempted to jump up, her arms flailing in an attempt to swim towards the surface. As she approached the edge of the tank, though, she suddenly felt something wrap around her tail. She had just enough time to glance down and see a comically oversized metal ball tied to her tail before she was tugged back downwards, her rear bouncing off of the floor of the tank and sending her sprawling onto her front.

Grumbling to herself, Applejack attempted to sit back up, wobbling on her rear as she did so. She reached down to tug at the chain wrapped around her tail to remove the ball, but it did nothing except jiggle it about.

“But a little extra weight’s not a bit of pain, just a few more puffs and you’ll be right as rain!”

Another magic tendril reached down and took a hold of the ring on Applejack’s suit. It tugged the string out, causing her suit to swell up even more, the belly and rear bulging out even further beyond the increase her limbs were subjected to. Rolling backwards from the force of the puff, Applejack wriggled her hooves helplessly. “Consarnit, let me outta this thing!” She yelled through the suit’s mask.

There was no particular sign that either pony had heard her, as they continued with their song-and-dance routine. It was a little hard to hear what was going on, but she definitely heard Flim say something about how the suit was so tough it could be used in space, and Flam mentioning that if it could do that you could go any place.

Applejack's main concern, however, was the increasing, swelling size of her suit. It was getting to the point where it was impossible for her to actually try again at removing the weighted metal ball, and all the bubbles in the cider made it look like the whole thing was leaking as well – but Applejack could tell it was anything but, as the inner layers of the suit squeezed her in a tight hug even as the outer layers expanded and stretched and squeaked. The pressure was rising, and the suit was growing.

Dimly, though the less-than-clear liquid, Applejack saw Flim and Flam passing out cider glasses. Then the cider in the vat began to pour over the edge in a fizzy cider-fall, and ponies began just holding their glasses up to collect some before drinking it.

“What in the-” Applejack said, then stopped and looked at her suit again.

The suit's bulk – especially the padded rear, inflating even faster than the rest and with only the weight on her tail preventing it from turning her upside down – was forcing the cider up and out of the vat!

“Consarn it, that there cider's expensive!” Applejack complained.

Applejack wriggled her legs as they were slowly engulfed by the swelling rear of her suit, limiting her movement even more. No matter how big and bulky her suit swelled up, the ball seemed to get just heavy enough to hold her down. The farmpony pressed down on the suit's belly with her hooves as best as she could as it started to stretch so large she couldn't see past it to where Flim and Flam were drinking up some of the cider-fall.

Had Applejack cared enough to pay attention to the showponies, she might have noticed they were getting a bit of sloshy pudge in their bellies as well. Applejack tried to tug on the ball once more in a vain attempt to loosen its grip when she felt the ring being tugged once again. Bigger and bigger her suit grew, squeezing in on her in an admittedly comfortable manner. Applejacks' limbs stuck out as the suit ballooned too large to allow her to move them beyond slight wiggles, the rump and gut still stretching bigger and bigger and bigger. The suit started to press into the sides of the tank, squeezing Applejack even tighter as she grunted and grumbled to herself. She began to sink into the suit, her vision obscured by the rubber expanding around her. Then she felt two weights press down even more on her suit, her head trying to turn to spot the source. The two sloshy showponies were now bouncing upon Applejack's suit, singing praises of unbreakable seals and limitless puffiness as the poor trapped earth pony could do nothing but squirm in the ever tightening embrace of the suit.

As they bounced, Flim and Flam discussed all the wonderful things about the Durable Double Diapered Dirigible Miracle Suit. How it had features galore, plenty and more, and that it was comfy and bouncy so you'd not be sore.

The bouncing and sloshing was a continuous sound now, and then both showponies stopped their song and turned to another topic.

“But Flim, do you know what we've missed?”

“Why, no, Flam! What have we missed?”

“Why, simply the most important thing about a fine piece of engineering!” Flam explained.

“Like th' off switch?” Applejack mumbled.

“It's so simple only a foal could miss it!” Flim agreed.

“So obvious to anypony who listens!”

“It's Durable, it's Double, it's Diapered... and it's Dirigible!” they chorused, each big-D accompanied by a double bounce which made the whole D.D.D.D.M.S ripple.

Applejack was about to ask what that could mean, when the suit began to swell all over again. It left the vat with a pop, and rather than bouncing down the hillside it instead began to rise into the air – slowly, held down by the big ball, but allowed to rise as the rope tied to the ball stretched like elastic.

The farm-pony tried to get out of her predicament, but there was nothing to buck – no solid surface to hit – and every movement just set her blimp-like suit shaking and wobbling again, adding to the bouncing and bounding from the two oversized salesponies on her back.

Flim bounced over to one of her flanks, and Flam did the same to the other. They activated little controls, and great big posters draped themselves across Applejack's flanks with a rustling sound – and, somehow, Applejack knew just what they were.

A giant advertisement for Flim, Flam, and their many inventions.

Applejack wobbled and twisted in the air, a blush crossing her face as she imagined all the ponies staring at her swollen rear and advertisement. And still the two stallions sang, endlessly gloating about the wonders of their products, leaving Applejack stuck listening to their boastfulness. At least they did manage to make the suit comfy.

A large balloony suit bounced off the ceiling of the barn, an exhausted farmhand burying her muzzle in the puffiness of the belly as she floated in the air, her rear showing off a picture of the two FlimFlam brothers winking.

Briefly, Applejack’s subconscious drifted off to imagine when a particular baby dragon had left her in a similar predicament from a pair of bellows.

The dragon in question was rolling over in his own bed, mumbling in his sleep a little as he explored his dreamscape.

“How deep is this cave? I didn’t think Rarity would usually go this far down to find gems…” Spike wandered through a dark maze-like cave, his steps echoing through the tunnels as he tried to find his way around. He raised the lamp he was carrying a bit higher, hoping the light would reveal a way out. He noticed a few more tunnels branching off from his own, causing Spike to stop in place. Left… or, maybe it was right? He gulped, trying not to admit to himself that he was lost. As he looked between the tunnels, he noticed a soft glimmer far off in the distance at the end of one. Hoping it was sunlight, Spike began to hurry towards it, glancing behind him nervously in case anything was sneaking up behind him.

Despite his fears, nothing showed up out of the darkness – though it did occasionally seem as though a pair of eyes was watching him. Spike even shot out a burst of flame at one point, seeing nothing, and then had a brief chuckle at the idea of a monster appearing in Princess Celestia's room.

A little calmer now, he followed the glimmer for another minute or two – then, slowly, decided that that didn't seem to be like sunlight. It had to be something else.

Then he turned the corner, and stared.

There was a huge pile of gems! Piled up in a heap in the middle of what must be the largest single cave down here!

The sight of them was awe-inspiring, and Spike stared for a minute or so – then realized that it was just making him feel hungry. He'd been down here for... for... some amount of time, and he was feeling hungry, and there were all these gems...

“I should tell Rarity about them,” Spike said to himself. “That's the right thing to do.”

He made to turn around, to see if there was another route to the surface, then stopped.

“But... there's so many here,” he told himself. “It's not like she'd know if there was one or two missing...”

He licked his lips, and took a step closer to the hoard of gems. They seemed to be glowing with their own internal light, which was how the cavern was so well lit, and he picked one of the rubies up before swallowing it in a single bite.

The texture felt odd. Not hard at all, not like most gems – but the taste was amazing. It was like the best things about a ruby, all concentrated into one surprisingly soft-textured super-ruby!

Spike couldn't help but let out a soft moan as he savored the flavor, quickly stuffing another gem into his mouth. He let out a soft burp, blushing afterwards and chuckling to himself. He reached out for a deep blue sapphire, licking his lips as he held it in his claws. It reflected his face, practically begging to be gobbled up. It was such a beautiful gem, a true masterwork of crystallization, or whatever it was that Twilight said made gems form. Spike didn't really care much about how the gems came to be, just how he could get them into his gut. Which he promptly did as he stuffed yet another surprisingly squishy gem into his mouth.

Chewing happily, he rested his claws on his belly again, not noticing how it protruded slightly further out than it did a few minutes before. Letting out another burp, Spike shook his head, trying to compose himself. "Ooof, that's probably enough." He turned to try and find his way out, but something was calling to him. Looking back over his shoulder, Spike looked at the pile of glowing, enticing, shiny, perfectly made gemstones. Well... he really hadn't had that many... and he was nowhere near full. He'd probably fill up on just a few more, then he can go and get Rarity. Waddling over to the pile, Spike picked up an armful of gems, staring down at their shiny surfaces.

This time, Spike told himself that he was only going to have the best ones – the ones which would be worth the time – so he began to examine each gem closely.

The first one looked delicious, with perfect inclusions that gave it a glittery feel, and he put that one in the Eat pile before moving on to the second one – a fine, shimmering garnet which had perfect edges even though it felt squidgy.

That one went in the Eat pile as well – and so did the next, and the next, until the Eat pile was almost as tall as Spike and there wasn't a Don't Eat pile at all.

Spike plucked one of the gemstones from the Eat pile and began nibbling on it while he examined the next one. Then he ate that one as well, then two more, and sped up until he was pushing gems into the Eat pile without even looking so he could eat them more quickly.

As he did, he got bigger – plumper, even fatter as the gems filled his tummy, but also swelling up in a general way. All these lovely, softly squishy gems were His, and that meant he had a big hoard – a big hoard for a big dragon! And so he had to keep eating, because the faster he ate through his pile the more he could add to the Eat pile and the bigger his hoard would grow!

The gems he was looking at were larger now, and Spike noticed that almost all the pile was made up of jewels larger than he'd already eaten.

“Shouldn't have started on the little ones,” Spike mumbled, in between mouthfuls. “Now I'll have to eat some more to make up for it.”

With the next mouthful, his belly plumped up a little more and his body grew a bit… and every gemstone did as well, swelling a bit faster than the preoccupied dragon.

Spike continued to eat and eat and eat and eat and eat. His belly swelled outwards, spreading his legs a bit as he had to waddle around the gems, each clawful causing a few more to tumble down as the pile lost its support. Stuffing himself fuller, Spike placed a claw on his growing belly to feel it stretch outwards, his tail flicking happily as it plumped up along with his rear. He was starting to lose his balance as he grew fatter and larger, and it didn't help that each time he picked up a gem, it seemed to be a bit bigger than before. Some he could only just fit into his mouth, but those were the absolute finest of them all. The gems just seemed to be getting tastier and tastier, they were indescribably good! Spike wobbled on one of his feet, waggling his arms for a moment before he fell forwards into the pile of jewels. Insread of several tough pokes and prods from the hard stones he was expecting, it felt like he was falling onto a pile of pillows. Spike sighed as it bounced on the soft gems, rolling over onto his back so his belly stuck up into the air while he scooped up more gems. More and more he ate, his belly stretching further and further above him, Spike loving every single bite.

Eventually, Spike noticed that he was surrounded in gemstones – above, below, all sides. They were like huge, springy sculptures, each one larger than he was even though he felt like a very full dragon, but he didn't care – there was lovely, tasty, comfy food literally everywhere he looked!

It was no longer possible to eat a gemstone with just one bite, and it took plenty of steady bites by now, but that was just fine by Spike – that gave him more time to savour the flavour, and snuggle up against the very gem he was eating…

As Spike yawned, snuggling in his sleep into a huge pile of plushy gem-pillows stacked so high they were close to falling on Twilight, some distance away a unicorn slumbered in her sleeping bag under a convenient branch.

As usual, Starlight Glimmer's thoughts were bitter – focused on the ponies who had rejected her – and her dreams were no different. In her mind, she was cantering through the woods around Our Town. Her cutie mark exposed, she revealed for what she was, and she knew deep down that the angry citizens were after their revenge.

Twigs cracked beneath their hooves, coming from several directions, and Starlight hesitated – not sure where to go or how to get away. She picked her direction, but a moment later nearly ran over an ebon-furred filly.

“Hey!” she protested, stumbling. “What did you-”

The filly was gone.

Then Party Favor came crashing through the bushes, and Starlight stared.

He was… big – bigger than before. And he looked… odd. Like he was made of some kind of artificial material.

"There you are, we've been looking all over for you!" He smirked, bending down and wiggling his rump in the air. Starlight was too hypnotized by the strange crinkly noises that emanated from the large pony to react before Party Favor pounced upon her, rolling over on the ground as he squeezed Starlight into his chest. Starlight squirmed in his grip, pressing against his chest as she did and noting how much softer his coat appeared to be. The large unicorn stood up, still keeping Starling pinned into him with one hoof as two more large figures appeared from out of the bushes. Double Diamond and Sugar Belle trotted up, looking just as strangely puffy as Party Favor did.

“Hey, I see you got our naughty little foal!” Double Diamond said, smirking down at the tiny unicorn. Starlight glared up at him, her horn flaring up as she teleported out of Party Favor’s grip. Unfortunately, when she landed, she was now standing on top of Sugar Belle’s back, wobbling unsteadily.

“Quick!” Double Diamond pounced upon Sugar Belle, squishing Starlight between the two puffy ponies. She vaguely registered an odd scent… was it foal powder? The ponies fell to the ground with a flump, Party Favor quickly joining in on the pile.

“Heehee, oooh, don’t think you’re getting away that easily!” He grinned widely, levitating a familiar staff in his magic.

Starlight wasn't able to see what was going on, but she suddenly felt a zap of magic, her body going stiff as she felt an odd tingling sensation course through her body. She tried to squirm, but was unable to move as the ponies she was pinned under shifted about.

The tingling sensation pulsed through her, like whole-body pins and needles, then focused in on her flank for a moment. Starlight winced, ready for the pain of Cutie Mark Removal, but then instead there was… something else. It didn't feel painful, but it felt odd.

Then it stopped.

“All done!” Double Diamond announced.

“What have you done?” Starlight demanded. “What was that?”

“Oh, silly...” Party Favor said, patting her on the muzzle with a crinkly hoof. “Little foals like you don't get to have cutie marks!”

“Foals!?” Starlight asked. “But – well, I'm smaller – but no, I'm not a foal!”

“Aww...” Sugar Belle cooed. “She thinks she's a grown up mare!”

There was a crinkly sound from her rear as Sugar Belle tapped something. “Well, if you're really a grown mare, you'll get to keep your cutie mark. But if you're really a foal, then you'll be just like the rest of us!”

Sugar Belle and Double Diamond kept Starlight pinned between their crinkly, poofy rumps, but Party Favor backed off a bit and patted that crinkly thing on Starlight's rear again.

“A diaper?” she demanded, thrashing about and only making her twin rump-shaped half-prisons shift back and forth with a rustle that made it clear what they were made of. “I don't want or need a diaper!”

Party Favor's reply was to consider her carefully, then abruptly move in. He began to tickle her mercilessly, and despite her best efforts the unicorn was soon laughing.

“Wha-hahahah, s-s-stop that! I c-can’t breeheheeehee!” Starlight laughed as she was tickled by Party Favor, the crinkly, puffy material he was made of only making his pokes and prods even worse. Sugar Belle and Double Diamond continued to rub their rears together, squishing Starlight even more to make it harder for her to gasp for breath. As she kicked and squirmed, pressing against her captor’s rumps, she faintly heard a soft hiiisssss filling the air. Too distracted by the large diaper critters, Starlight didn’t realize the sound came from her own padding as it began to swell from her wetting it. It greeeeew around her rear, puffing up her belly slightly as she wiggled about inside it.

Party Favor stepped back, smiling smugly as Starlight gasped for breath, flopping down to the ground as the others released her from their rump’s grasp. Starlight rolled back onto her rear… only to notice the resulting squish from her diaper. Looking down at her diaper, her face grew a bright red as she noticed her cutiemark printed on it had already faded slightly. Starlight immediately stood back up, stumbling back as she tried to tug at her diaper. “Get this thing off of me! I do not need a diaper!”

“Well it sure looks like you do to me!” Sugar Belle teased, poking Starlight’s rear with her hoof. “Besides, you look sooooo cute! I bet this silly little foal would just love a big bottle of chocolate milk~” Sugar Belle produced an oversized bottle out of seemingly nowhere, scooping Starlight up into her forelegs as she plopped down onto her own puffy rear.

“Stop it!” Starlight protested, cheeks flaming. “I don't – but – hey!”

Her diaper let out another crinkle-squish as she struggled, but Sugar Belle's crinkly body was hard to get any kind of traction on. The diaper-critter mare just cooed over her, and waved the large bottle of milk in front of Starlight's face.

Realizing there was at least one way she could resist this situation, Starlight closed her muzzle and shook her head.

“Party, can you help?” Sugar asked. “I think the little foal's cranky and misbehaving!”

Party Favor nodded, and began to tickle again. Starlight pressed her lips together, but after less than half a minute she began to laugh again – and in went the nipple of the bottle, together with a squeeze so some of the sweet, chocolatey milk went into Starlight's mouth.

“Mmmph...” Starlight protested, reaching up with her forehooves to try to push the bottle away, but she was already starting to suckle almost automatically. The rich milk tasted amazing, and it was hard for her to concentrate past wanting more and more of the milk as quickly as possible.

Sugar Belle began bouncing up and down gently, making her material tremble a little, and making sound from Starlight's own diaper consisting of an orchestra of crinkles and squishes.

Time felt odd, and Starlight had no idea how long she'd been drinking. But the bottle was nearly finished when she suddenly felt a familiar sensation – she needed the bathroom.

“Aww, look!” Double Diamond said, pointing. “She's trying to do a potty dance, but she forgot she's wearing the potty!”

Starlight pushed against the bottle, squeezing her legs together to try and keep herself from wetting again. This only seemed to make things worse as she felt her padding bulge from the squeezings, squishing and crinkly some more. Starlight whiiiiined, bouncing in place as all three large ponies coddled her. Double Diamond pressed down on the front of her diaper, pressing and mushing her padding as she tried to fight the urges building in her pampers. It wasn’t too long before the hiss filled the air again and Starlight’s padding bulged out even more, bloating bigger and bigger. Starlight’s face turned a deep crimson as the bulb of the bottle was removed from her mouth, Sugar Belle nuzzling her softly. “Such a silly little foal we have!” She giggled.

The pattern on Starlight’s diaper grew even fainter, the padding swelling bigger and bigger. The diaper creeped further up her belly, wrapping more and more of her tail up as the crinkly material spread across her body. Party Favor took Starlight back as her padding grew, placing her on the front of his own padding-like body. He began to bounce Starlight in place, only making her wet more as she whimpered and squirmed, the material spreading more, growing thicker and thicker as she was teased. “S-s-staaaahp! P-please!” Starlight said, trying to break free from Party Favor’s grip. Double Diamond giggled and booped Starlight’s muzzle.

“Such a silly foal, looks like she’s going to be a big bouncy crinklebutt soon!”

“But I don't want to be a crinklebutt!” Starlight whined, finding it harder to think straight as emotional reactions surged in on her. She shook her head, waving a foreleg around to try and hit Double Diamond for teasing her, but the glancing blow she did score just resulted in a crinkly sound as she nose-booped him in turn.

“Such a cutie!” Party Favor giggled. “Aww… does the wittle filly sound cranky to you, Sugar Belle?”

Sugar Belle made a show of examining Starlight, making sure to pat her diaper repeatedly and make it squish with every pat. “I think she's just a little cranky,” the mare agreed. “We should probably put her down for a nap after this – but I know just what to cheer her up!”

Starlight tried to cudgel her confused brain into shape, crossing her hind legs as best she could – not much – as Sugar Belle moved a little closer.

“I'm going to...” Sugar Belle began, then left in a long pause. Starlight recognized the tactic, but she couldn't stop it working – she frowned, nervous about what Sugar Belle might do.

Then the mare pounced, and blew a raspberry on Starlight's tummy – just above the top of her diaper.

The experience was such a surprise that Starlight started to laugh with surprise – blushing as she reacted like a little filly, giggling and trying to squirm out of the way.

She shook her head as Sugar Belle came in again. “N-no, stop-”

Another raspberry. This one made her squeak, and then she realized to her shock that she was wetting her diaper again.

This time, the diaper soaked it in and plumped up faster than it had before. The cutie mark vanished completely, and the padding expanded so everything it had already covered was thicker and harder to move. Not content with that, it then moved all the way up her body, encasing her completely in a crinkly, padded suit made to look just like her.

Starlight gasped for breath after the tickling from Sugar Belle's raspberry, wiggling in her new plump crinkly suit. She giggled as she stood up in her puffy suit, bouncing her rump into the others. They began to wander off, their bodies crinkling cutely as they waddled through the forest, a little black filly snickering as she watched the newly puffed up pony wandered off.

The black filly’s horn lit up as a portal appeared in the dreamscape. The filly jumped through, puffing back into her adult Nightmare form, wandering through the world of each pony’s dreams. She felt Luna wriggle around slightly inside her, making her snicker and pat her belly. “My my, you’re quite squirmy tonight widdle Woona~ Don’t you worry, I’ll get you some new friends soon. I’m sure all my foals have had some time to be properly padded up by now.”

Nightmare’s horn flared again as the dreams swirled around them, sweeping through as she searched for a dream. She found herself looking into Twilight’s dream where the alicorn was hurriedly scrawling away at a test, padding swelling under her rear. This should be very fun. Nightmare grinned as she stepped into Twilight’s dream, her magic beginning to flow through Twilight’s subconscious.

“I’m very disappointed, Twilight. I really thought you would have done better on this test,” Cheerilee said. Twilight whined, sitting atop a puffy number as she squeezed a plush plus sign. “I’m afraid I’ll have to take you to the principal’s office.”

“The Principal's office?” Twilight repeated. “But – but...”

She looked down, blushing. “Yes, Miss.”

It took her three tries to get up, her thick diaper making her clumsy, and she started to trot before pausing. Turning back to her desk, she picked up the plus-plush and carried it with her as she waddled through the Magic Kindergarten behind Cheerilee.

The whole building was full of other fillies and colts, diapered up just as thickly as she was, and occasionally one of them pointed at her and whispered to another – then they both giggled, making her feel dreadfully embarrassed.

“Stop it…” she said, shaking her head, then tried to keep her head down and keep waddling.

After a few minutes, they finally reached the door to the office, and Cheerilee pushed it open. “Sorry to disturb you, Ma'am.”

“And who's this?” the Principal asked, from behind her desk – Twilight couldn't quite see who it was.

“Twilight Sparkle, Ma'am,” Cheerilee replied.

“Ah, Twilight Sparkle,” the Principal repeated, as Cheerilee left. “I heard about this. Apparently you… failed a test.”

Twilight blanched.

“Sorry, Ma'am! I mean, sorry Miss?” she said, cringing. “But I – I mean – I didn't know these topics were even on the test! I expected multiple-choice! I forgot my notes!”

“Now, now, Twilight Sparkle,” the Principal said. “You need to learn to stop making excuses.”

Twilight’s ears flopped down as she looked down at the floor, giving her plus a squeeze. “I-I’m sorry…”

“It’s alright, but I do believe you’re going to need to review, these are very important topics for any filly to know. But I think I can help you with that.” The principal turned around in her chair, revealing herself to be Nightmare Moon, leaning forward onto the desk. Twilight gasped, taking a step backwards but plopping down onto her rear as she lost her balance.

“N-N-Nightmare! What, this doesn’t make sense, you can’t be-!” She was cut off as Nightmare pushed a hoof into her muzzle, shushing her. Twilight noticed her hoof was a bit softer than it should be. And there were seams running along her belly, which was pudgy enough to press into the desk as Nightmare sat back in her chair.

“Oh, I know why you’re confused, any pony that would fail a test like that would be easily confused. Don’t you worry, though, we’ll have to knowing everything in no time. Now,” Nightmare’s desk and chair puffed away as she stood up in front of Twilight. “Which of these pampers is the thickest?” Nightmare asked as she began to write down brands on a chalkboard that appeared on the wall.

“Wha-huh?” Twilight blinked. “How is this… what?”

Nightmare tutted. “Twilight, if you don't concentrate you're going to need to keep coming to remedial, and it'll go on your permanent record!”

Twilight gulped at the threat to her permanent record – something that scared her more than almost anything else – and tried to concentrate. “Uh, okay… I guess Cushies sounds kind of thick? But I don't have any data.”

“This is why you need to do remedial,” Nightmare told her. “Now, Cushies feel like this-”

There was a sudden floomph, as Twilight's thick triple-stacked diaper changed all at once. The change made Twilight fall backwards with a squeak, and she landed on her back before rolling back over onto her front.

“Oopsie, baby fall down go boom?” Nightmare teased. “And these are Mythies.”

There was another floomph as the diapers got thicker, making Twilight blush hotly.

“Which are thicker?”

“The Mythies are!” Twilight answered. “They're thicker!”

“That's much better,” Nightmare praised, patting Twilight on the head as she got to her hooves. “Now, these are All-Nights.”

The diapers which appeared now were so thick that Twilight's legs trembled for a moment, then she slumped down onto her rump again with a blush.

They went through three or four more diaper types, switching back and forth more than once, and Nightmare asked questions constantly. Which was warmer? More comfortable? Harder to remove?

“Trick question,” Nightmare told her, after that one. “Fillies aren't allowed to take off their own diapers!”

Then Nightmare put her back in the thickest of the lot – Super Clouds – and brought out a bottle of normal white milk and another of chocolate milk.

“Let's see if you can tell which of these is sweeter!”

Twilight took a sip of one bottle, feeling very small and embarrassed, and then another sip. She switched to the other, and quickly had her answer… but it was too tasty, so she kept drinking.

Her bladder gave her a warning pang, but she barely noticed.

She drank some more, rocking a little on her thick diapers. Suckle after suckle after suckle, she wiggled in place as Nightmare puffed away the other bottle. "I suppose that's a definite answer. You certainly are a fast learner, Twilight."

Twilight snapped back to attention, glancing down at the bottle. Her face turned a bright red as she stopped her suckling. But… it was a very sweet milk, maybe a few more suckles wouldn’t hurt. But before she could, Nightmare pulled the bottle away, leaving Twilight whining a bit.

“Aw, poor widdle baby wants her baba? Well, this leads rather nicely into our next lesson.” Her horn puffed up as several pacifiers appeared in the air in front of Twilight. “Now, which of these pacifiers is the cutest?” Nightmare asked. Twilight’s muzzle scrunched as she looked at the array of pacifiers in front of her. Despite the odd urge to suckle that she was now experiencing, Twilight was reluctant to pick out one. “Come now, Twilight, this isn’t a hard question. I’d say there’s no wrong answer!” Nightmare teased, pinching Twilight’s cheek with her magic.

Twilight grunted a little, leaning back, but only far enough that she didn’t flop back from the thickness of her pampers again. “I… uh… that one?” She pointed out a pacifier that was the same colors as the highlights in her hair, and before she could react it was popped into her mouth, Nightmare puffing the others away.

“A good choice, indeed!” Nightmare said, patting Twilight on the front of her diaper. It was when Nightmare’s hoof pushed down into her puffy padding that Twilight noticed her aching bladder, and her eyes went wide. She wobbled in place, squeezing her legs together as she tried to keep herself from wetting her padding. “Hmm… perhaps we should have potty dance lessons now?”

Twilight shook her head, blushing, trying to hold her bladder – to do anything to avoid soaking her diaper.

But she'd drunk so much of the bottle that it was a losing battle, and she began twitching back and forth in her desperation.

“Aww...” Nightmare cooed. “Looks like you are trying to do a potty dance!”

Twilight squeaked at the reminder, and stopped – then realized how foolish an idea that was a moment later, as her bladder finally let go.

The thick padding she was wearing soaked it all up, puffing up and becoming squishy and soggy, and Twilight fell backwards to land on it with a thump and a squish and a blushy, embarrassed sigh.

“That's much better!” Nightmare told her, picking her up and giving her a snuggle. The warm, fuzzy material Nightmare seemed to be made of was oddly soporific and comfy, making her yawn, and she blinked a couple of times before snuggling in a little.

Nightmare laid her down in a crib which Twilight could swear hadn't been there a few minutes ago, but she was so sleepy and worn out that she didn't even care.

Chuckling over the sight of Twilight sleeping in her sleep, Nightmare spared a thread of her attention to check the outside world and confirm that it wasn't just in the dream that Twilight was soggy.

“Let's go and look at how that Pink Party pony's doing next~” she said, and reached for her power to travel between dream worlds again.

Meanwhile, a certain mythological creature tribute act was dancing his way through his own dream.

“Hey,” Discord said, shrugging. “It's something to do.”

Then he looked down, seeing a plaid-patterned diaper around his waist.

“This doesn't seem right!” he announced. “Get me the front desk! I think I'm in the wrong story!”

The plaid-patterned diaper began to puff up, air hissing into it as it extended along and conformed to his body, and the lower half became a long, patterned tail with a flute-pipe at the end. More pipes appeared along the back ridge of the puffy plaid material as it spread up his torso to his neck, and a cheery circus music began to play.

“Gah, I’m not joking, this isn’t supposed to be happening! Where’s the author? I need a stern talking with- mmpphh!” Discord let out a soft moan as the padding began to pulse as it swelled, squeezing down on him as it grew, the plaid pattern stretching up and out and up and out as black pipes magically flowed down over the Draconequess’s legs. He tried to tug on the diaper as it grew, wrapping up his tail with a red rope as another pipe grew out of the end. The strange hypnotic tune continued, Discord starting to dance around against his will. He waggled his rear back and forth as the material swelled up around his chest. His rump ballooned out, the suit causing him to bounce upon his rear as the tune continued.

“Curse you, padding, I’m not supposed to be the one getting caught!” He grunted as his arms were wrapped up in more pipes, and it wasn’t too long before his head was surrounded by a grinning pipe dragon head, Discord trapped in his jaws. With a snap, the dragon shut his jaws, licking his lips as he patted his huge bouncy belly, feeling Discord wriggle around as he was squeezed inside him.

“Well, that was fun! I do hope you didn’t mind the little interlude, Discy~”

Author's Note

Featuring a cameo from Bagpiperix, another monster Minty and I have played with~