Squeaky Mark Crusaders

by Runic Script

Rating: teen
Tags: Other, Silver Spoon, Fetish, Comedy, Cutie Mark Crusaders, Random, Diamond Tiara, Slice of Life, Babs Seed, My Little Pony: Friendship is Magic
Length: 7819

The CMC get a special delivery of some magic pooltoys that may or may not be a prank.

“The real question is, why would anyone send us pooltoy versions of them of all ponies?”

“Ah think the real real question is, who in their right mind inflates a pooltoy before boxing it up in the mail? These big boxes are expensive.”

The CMC get a special delivery to her clubhouse, part of an elaborate magical prank by Diamond Tiara, Silver Spoon and Babs Seed.

Tagalong story (and expansion) to a trio of commissions I got from The Furry Railfan.

Not a clopfic, but I won't pretend there aren't a lot of kinks involved in this.

Story includes pooltoys, pooltoy tf, inflation, partial inflation, possession, partial possession, reality alteration, light hypno/mc, silly outfits, diapers and general silliness.

Published 2021-01-18 20:30:00 UTC
Last updated 2021-04-23 19:10:15 UTC

Pooltoys and Pranks

“Have we ever gotten mail to our clubhouse before?” Sweetie Belle poked her large cardboard box with a hoof, inspecting the label curiously.

“It’s Derpy, nobody really knows how her mail delivery works. Just be glad it works.” Scootaloo frowned at the contents of her own box, giving the rubbery grin on the face of the Diamond Tiara pooltoy a light bop with her hoof. “The real question is, why would anyone send us pooltoy versions of them of all ponies?”

“Ah think the real real question is, who in their right mind inflates a pooltoy before boxing it up in the mail? These big boxes are expensive.” Apple Bloom snorted, leaning in closer to the grinning face of the Babs Seed pooltoy. “Huh, they even got the freckles ri-mmmph!”

“So I guess this one will have- eep!” Sweetie jumped back as her box popped open, the Silver Spoon pooltoy inside popping out to full size. She huffed and picked it up to set it on the floor properly. “Even when they’re toys they’re annoying.”

“Yeah, well, what did you expect.” Scootaloo snickered, bopping pooltoy Diamond’s face again. “It’s Diamond Tiara and Silver Spoon, even their faces are annoyimmmrrph!” She flailed as the pooltoy suddenly pounced on her and pushed her over, pressing its suddenly not so rigid anymore grin to her mouth.

“I still don’t get why anyone would make these, though.” Sweetie Belle sat down in front of the Silver Spoon pooltoy, giving the big grinning toy a sceptical grin. “Do you think this is supposed to be some sort of prank?” She blinked and turned her head. “Uhm… girls? What are you-?”

Scootaloo was on her back on the floor, blushing and giving muffled complaints as the Diamond Tiara pooltoy forced a long kiss on her, slowly deflating as it huffed and puffed all the air into Scootaloo’s cheeks and from there her belly and rump.

Apple Bloom was slowly pushing herself up again on wobbly legs, grimacing dizzily as she slowly wheezed out the last of her own excess air, a shrinking bit of rubber around a valve the only thing left of the Babs Seed pooltoy, disappearing completely only a few seconds later.

“G-girls? Are you eeep!” Sweetie Belle squeaked as a pair of puffy inflated rubber hooves grabbed her cheeks, pulling her head back around to the Silver Spoon pooltoy that seemed to be grinning even wider, or maybe that was just the sight of its grin getting closer and closer just before Sweetie’s thoughts were all jumbled and blown around from a whole lot of air being huffed and puffed and squeaked into her head, cheeks puffing out and ears stretching and inflating for a moment before the air started to travel down her throat and down into her rump, thoughts getting whirled around even more and leaving her completely dizzy.

~~~~~

“Ugh… did anyone else have weird dreams last night?” Scootaloo groaned, resting her head on her desk as they waited for class to start.

“Kind of? I don’t remember much but I think it was one of those embarrassing-yourself-at-school dreams…” Sweetie Belle blushed. “At least I’m pretty sure ponies were laughing at me.”

“Yeah, I had one of those dreams where you realize you’re wearing clothes in class.” Scootaloo blushed as well, sitting up as Miss Cheerilee entered the classroom and hoping nobody would ask any details on what clothes she’d been dreaming about. Sometimes dreams were just weird. “What about you, ‘Bloom?”

“Ah dreamt about cider, Ah think.” Apple Bloom shrugged. “Lots of cider, but that’s still not really anythin’ unusual in mah family.”

Sweetie hummed and nodded, before looking around with a frown. “Did any of you hear something about Diamond Tiara and Silver Spoon? They’re not at their desks.”

Apple Bloom looked over at the two empty desks curiously. “Huh, reckon they’re late or somethin’? Miss Cheerilee doesn’t seem to care so maybe they’re already excused.”

“Maybe they’re at some hoity-toity rich pony thing with their families.” Scootaloo shrugged, then grinned. “Hey, at least that means we have a whole day without seeing their dumb faces and having to hear their- whoa!” She yelped and flailed as her stomach suddenly expanded rapidly, turning pink and squishing against her desk and chin. “H-hey, what’s going mrrrrph!” She tried to push her belly down with a hoof so she could look down at it, but all it accomplished was making her cheeks bulge out comically as well with a pink tint before her belly expanded another few inches to squish into her muzzle even more.

“Scootaloo? What’s happeneeek?!” Sweetie Belle squeaked and grabbed her own desk for balance, blushing bright red as she was pushed up and forwards by her rump suddenly ballooning out under her, squishing against and around her chair and turning a shiny grey silver color, complete with a cutie mark of a decorative silver spoon. Sweetie Belle grimaced and blushed even more as her rump wiggled and wobbled on top of the now rather small chair, feeling much more sensitive with the way it squished and squeaked against it. “W-what’s going ooooon?”

“Sweetie Belle? Why does your rump look even more big and dumb than normal?” Apple Bloom flailed and pawed at her cheeks as her head started to inflate, mane flattening out even as it inflated and gaining a second, shiny light red tone in it. Her face tanned to a light brown complete with freckles, smirking around her huge plump balloon cheeks, muzzle and even her ears ballooning out bigger. “Everypony look at that big dumb squishybutt not even fitting on her chair~!”

“Apple Babs! Class has barely started and you’re already disrupting it.” Miss Cheerilee glared over at Apple Bloom, earning herself a thick balloony tongue blowing a raspberry at her. The teacher simply huffed and rolled her eyes. “Since you three apparently are starved for attention, why don’t you start with Show and Tell today? I have the things you left here yesterday. Silver Belle, Scootiara, that means you two as well, come up front.”

The three fillies all squeaked in surprise, trying to give a denial but failing for various reasons. Scootaloo barely managed a squeaky mumble with her cheeks puffed up and her muzzle still squished into her big ballooned belly. Sweetie Belle was still blushing bright red and only managed an embarrassed squeak of her own, biting her lip as her rump squished into the chair again. Apple Bloom tried to say something, only to hear her cousin’s voice coming out with “What’s Squishy Belle going to show and tell about, her giant butt?”

Sweetie Belle whined and blushed even brighter, wiggling to get her big butt off her chair and then helping to pull Scootaloo away from her own desk that she was squished into. Apple Bloom had little choice but to follow them to the front of the class, stumbling and almost tripping as her head suddenly shrunk back again to normal size and coloring, leaving her bumping dizzily into the nearest large obstacle.

She blinked and shook her head clear, then blinked again as she realized that what she’d run into wasn’t actually Cheerilee’s desk or the blackboard, but a large barrel of Sweet Apple Acres cider. She stared at it in confusion for a few seconds before squeaking as her hooves inflated to a light tan and started walking her in front of the barrel, grabbing the short hose connected to the spigot and stuffing it into her mouth.
Her eyes widened as one of her hooves moved to crank open the spigot, the first large bulge of cider traveling down the hose before she could even think of spitting it out again. All she could do was clamp down on the hose and try to wiggle her hooves to close the spigot again, pretty certain that anything would be better than spilling a barrel of cider and having her family find out about it.
That was all she could think about it before the first big gulp of cider hit her and gushed into her mouth, puffing out her cheeks and making them slosh audibly. All she could fully focus on was gulping down the cider as fast as it came, blushing and squirming weakly and giving a few muffled mumbles around the hose in her mouth as her belly filled up more and more with cider, growing bigger and sloshier and inflating with the familiar brown tan. She barely even noticed her hooves deflating again, only one forehoof still inflated and holding the spigot open while the other three pressed and squished into her belly, not even touching the floor anymore as they rested on her sloshing tummy.

Scootaloo was wobbling and waddling around her big belly, letting out a relieved breath and relaxing a bit… only to find her relieved breath come out as more as a squeak, and most of the air from her belly moving into her hooves and head, slowly turning the tips of her hooves pink. Her front hooves moved up on their own to squish her cheeks before feeling up her muzzle to find a big squeaky rubber grin, squishing and stretching it for a moment.
Just as she was starting to whine and blush her hooves dropped again, instead carrying her over to a bag and pulling out the items inside: a large shiny and sparkly inflatable tiara in gold with pink rubber pearls on top, and a thick orange inflatable rubber diaper in the same color as her usual fur, except for the pink frills along the edges, the transparent valve on the front surrounded by the words "Frilly Filly Fashions" and the picture of what looked like a heart-shaped royal seal depicting the tiara over a diaper and a pacifier, printed onto the flanks like a cutie mark.
Scootaloo only whined and blushed more as her hooves grabbed a brush to neaten up her mane before plopping the tiara on top, then stepped into the diaper that was already quite thickly inflated, squeezing and squishing herself into it until it was sitting nice and tight. A moment later she felt her hind legs deflating back to normal size again, all the air going back into her belly to make it squish and squeeze around her suddenly quite tight diaper, forming a second valve where her belly button would be. Her forelegs deflated as well, making her belly only bigger still and her diaper even tighter. All four legs still kept just out of her control though, forehooves squishing into her cheeks and showing off her silly rubber grin as her hind legs danced in place, waddling and dancing clumsily and showing off her diaper to everypony in the class.

Sweetie Belle blushed as she saw both her friends getting forced into embarrassing outfits or positions by their puffy limbs. That said, she couldn’t see any other props beyond what the other two had already claimed, and she didn’t want to get laughed at for her butt and failing something as simple as Show And Tell class. She turned around to see if she’d missed something somewhere, only to squeak as her legs puffed out and locked up, hindlegs straightening out at the same time that her forelegs buckled and lowered themselves to the ground.
It only took her a second to realize that she had accidentally left herself with her back to the rest of her class, and was now raising her big inflated silver butt up high, even shaking it lightly at her laughing and giggling classmates as a big grey rubber valve popped out from one buttcheek. Her face burst into a deep red blush, the poor filly whining and trying to hide her face against the floor from all the embarrassment, nearly convinced that it couldn’t get any worse or more embarrassing than this… until one of her forelegs lifted up again from the floor, leaving her balancing her front on just one leg while her other hoof started to slap and squish her rump.
She whined and blushed even more, nervously raising and turning her head just enough to look behind her, watching herself wiggle and shake her huge rump tauntingly at the rest of the class and even her teacher, slapping it and pushing her hoof deep into her squeaky squishy buttcheek.

“I think that’s enough of that.” Miss Cheerilee sighed and walked over to them, picking up the cider barrel and showing that it was at this point quite thoroughly empty. “I think everyone has gotten a good look at your diaper, your butt or how much cider you can drink. Now if you three can take your seats again so we can begin lessons for the day?” She herded a blushing Scootaloo and Sweetie Belle back to their desks before giving Apple Bloom a skeptical look. The filly blushed and wiggled her legs, trying and failing to touch the floor until Miss Cheerilee just sighed and started pushing and rolling back to her desk.

The three fillies didn’t pay particularly much attention as classes went on, blushing and trying to hide from the giggles and whispers of the rest of the class. Apple Bloom was rubbing her oversized sloshing belly, Sweetie Belle was squeaking and blushing as she tried to squish her butt down to a smaller size with her hooves while Scootaloo tried to at least take off the tiara and diaper, only to find her hooves veering off course at the last moment each time to either squish her puffed up cheeks or slap her diapered rump.

After about an hour they were finding themselves getting more and more fuzzy-headed though, as their heads started to inflate more and more to look like the pooltoys that had started the whole problem, thoughts getting jumbled as if someone was derailing them. Scootaloo blinked slowly, trying to ask her friends if they were feeling odd as well, only to find herself giving a squeaky yawn and slowly closing her eyes.

~~~~~

Sweetie Belle yawned and blinked awake slowly, wobbling as a dizzy spell hit her when she tried to push herself up from her desk. She blinked again and rubbed her eyes, then gasped as she looked around the empty classroom. “Oh no! Is school already over?!” She blushed and wobbled off her chair, moving over to Scootaloo’s and Apple Bloom’s desks to shake her friends awake. “Girls, come on! I think we fell asleep in class!”

“So? I mean, it wouldn’t be the first time.” Scootaloo groaned and waved her off, grinning and yawning as she sat up and stretched. “At least we’re done with having everypony laughing at us, if everypony else went home, right?”

Apple Bloom nodded, sitting up and looking around. “There’s that Ah suppose… hey, I already feel a lot better, too. Do you think whatever weird prank thing that was is over now?”

Sweetie Belle blinked, looking down at herself. Her mane was curly and bouncy as usual, her forelegs and hind legs looked normal and her huge squishy inflated rump had no hints of silver or any pictures of spoons on it. She gave it a poke with her hoof, pushing and squishing her hoof several inches deep before pulling back and giving her rump a slap that set it jiggling, blushing and giggling. “Yeah, I think you’re right! Everything seems to be back to normal.”

“Huh? Oh yeah!” Scootaloo jumped up clumsily, waddling as she turned around herself to look herself over, poking her squeaky diaper, squishing her hooves into her big squishy ballooned belly, her puffed out cheeks and her big silly grin. “I can move and stuff like I want! No more getting forced into dumb dances, now I only show off my diaperbutt and my silly grin when I want.”

Apple Bloom wobbled and wiggled her legs. “Ooof, yeah. And Ah can go back to guzzling cider at my own speed. Gotta keep myself at just the right size of big and sloshy.” She smirked as her hooves did indeed barely touch the ground around her belly, wiggling and shuffling forward around her desk.

“So, uhm… what do we do now?” Scootaloo waddled around on her hind legs, squishing her cheeks and twirling from time to time. “Hey, did any of you ever find out why Diamond Tiara and Silver Spoon weren’t in school?”

“Probably somethin’ to do with that prank they played on us.” Apple Bloom blushed and scrunched her muzzle, poking her belly to make it slosh and gurgle. “We still gotta figure out a way to get back at them.”

Sweetie Belle hummed, slapping and squishing her rump to squeeze it between the desks. “We could go to Sugarcube Corner? We can plan there, and if anyone can tell us where they are and what they’re up to, it’s probably Pinkie Pie.”

Scootaloo nodded, waddling out the door. “Sounds like a plan. Last one there is a frilly filly!”

Squeaky Mark Crusaders Sillybutts YAAAAY!

[One week earlier:]

“So why exactly are we looking for ways to prank my cousin and her friends in a library? Are you guys really that short on ideas?”

Silver Spoon looked up from her book, looking around for a moment before making eye contact with Babs. “Don’t ask me. I like libraries, but Diamond Tiara is the one who dragged us out here.”

Both of them jumped when the pink filly in question slammed a large book down on the nearest reading table. “We’re here because the librarian keeps all kinds of weird and useful magic books around and then loses track of them. And that means they’re up for grabs for whoever finds them.” She lifted up the cover to show it off to them.

“Patented Pranks for Perfidious Ponies…” Silver furrowed her brow before turning her attention back to her own book. “My father says never to buy anything that’s alliterated, because whoever made it obviously spent their time and effort on the name instead of on the actual product.”

Babs rolled her eyes, swapping some books between shelves. “How do you even know that book is actual magic?”

“Simple.” Diamond smirked and started flipping through the pages.

The other two fillies looked up to watch, staring as the book kept flipping through pages. And flipping. And flipping.

“...does that actually end at some point?”

“I have no idea.” Diamond grinned. “From what I can tell it starts with the basic stuff and the further you go back the more interesting and elaborate and magical does it get.”

The other two nodded, staring at the flipping pages again.

Silver frowned slightly. “Maybe you should… you know, stop? At some point.”

“Oh fine.” Diamond sniffed and opened up the book fully, looking at the page she’d stopped at. “Oh, this is… weird? Okay, so I might have gone a bit further into the book than I thought.”

Babs trotted over to look over her shoulder. “Pooltoy Possession Prank Potion? That’s… why would owning a pooltoy be a prank? Why would you need a potion for that? Just buy a pooltoy.”

“Oh hush up and let me read this.” Diamond huffed and blocked her view, reading and muttering quietly under her breath for a minute before looking up again. “Okay, so this is… really elaborate and kind of weird but the ingredients aren’t actually that hard to come by and if we pull it off this is absolutely going to get those blank flanks good.”

She pulled out a few pieces of paper from her saddlebags, along with a pencil, pausing to write down some bullet points. “Okay, so if I read this all right… this potion turns somepony into some kind of magical cursed living pooltoy or something? Except they’re not a normal pooltoy but they can blow all their air into somepony else to possess them, turn parts of them into a pooltoy version of the user and control them to an extent. Because of the curse other ponies will see them as a kind of merged version of the pony and the pooltoy and will think things are more or less normal no matter how they look and what they do.” She flipped a page. “The potion lasts about 24 hours and after that you just appear again where you possessed them… but the curse effects or whatever actually last for about a week.”

Babs blinked, trying to follow all that. “So… wait. You mean if we make that potion and drink it we can turn into pooltoys, curse my cousin and her friends, make them do all kinds of embarrassing stuff for a whole day and then laugh at them for six more days without anyone else catching on?”

“I… think? I think we’d need to experiment with some of the details but that seems about right.” Diamond nodded, writing down the list of ingredients and other instructions.

“If that actually works it sounds almost too good to be true.” Silver closed her own book and put it back on the shelf. “How would we test something like that, though?”

“Pinkie Pie?” Diamond Tiara shrugged. “She probably wouldn’t be mad if it fails completely, and nopony will really question it if she acts even stranger than usual for a day.”

Babs nodded. “Maybe that teacher of yours as well, if it works. We could see if we can set some things up in advance.”

“This all sounds like we’re going to get detention for a month.” Silver sighed. “But if it actually works it’ll probably be worth it just for the entertainment value. Alright, I’m in. Now what ingredients do we need…?”

~~~~~

“Fir- eep! F-first!” Sweetie Belle squeaked and blushed as her big rump got stuck in the door to Sugarcube Corner, then squeaked again as Apple Bloom wobbled into her and pushed her through into the café.

“Second!” Apple Bloom wobbled and sloshed around her, turning around to stick out her tongue at Scootaloo waddling up to the door. “Guess you’re a frilly filly then.”

“Well duh. That’s what my diaper says.” Scootaloo giggled, getting up on her hind hooves to waddle-dance and show off the writing on her padding. “I’m the frilliest filly in town!”

“Well plant yer frilly filly butt down over here or we can’t order.” Apple Bloom wiggled and flailed a bit as she tried to pull herself up onto the seat of the café’s extra-wide booth, squishing herself into Sweetie Belle’s big squishy flanks to make enough room for their friend.

“Yes yes. Don’t rush me, Pinkie isn’t going to throw us out if we take too long.” Scootaloo planted her padded butt down on the seat, bouncing a bit on her inflated diaper.

“That’s right! But I might have to help you fit through the door again.” Pinkie Pie giggled, pronking up to them. “Hiya, girls. Did you guys have a good day at school?”

“Ugh… don’t get me started.” Scootaloo crossed her forelegs over her big balloon belly, blushing lightly at the thought of the school day. “Diamond Tiara and her friends played some weird prank on us to embarrass us in front of the whole class.”

“Yeah, they made us look like the bunch of big dumb dorks we are.” Apple Babs nodded, then paused and reached up to squish her big pooltoy head back to its original size and look, looking a bit dizzy as she shook it. “Wait, what’d Ah just…?”

“Well, I got juuuuust the thing to cheer you up. I got a special delivery just yesterday and now I got your favorite special orders ready just for you!” Pinkie grinned and bounced in place a few times before rushing back into the back of the store, coming back in through a side door pushing a small cart full of tanks and barrels ahead of her. “Ta-dah~! It’s a bit bulky, but then so are you. So just let Pinkie Pie set you up with your favorites.”

“Our favorites? Wait, what do you mmmfff?” Scootaloo squeaked and flailed, cheeks puffing up even more as a large pink paci was stuffed between them, plugging her silly grinning mouth. A hose connected to a large helium tank on the cart and she only had a few seconds of confused flailing before the first bulge of the gas reached the paci, her cheeks ballooning out big enough to keep the paci trapped in place and the rest of her body slowly swelling up to match.

“Oh hey, is that a full barrel of Sweet Ammmlll mmhhmrr? Mmmh…” Apple Bloom blinked and wiggled a bit before relaxing happily as a hose was stuffed in her mouth for the second time that day, bulges of cider running from the large barrel down the hose and her belly growing bigger again to lift her hooves off the seat and then some.

“Wait, so what do I get?” Sweetie Belle blinked down at the large and normal-looking milkshake sliding in front of her. She took a long sip through the straw, smacking her lips as she tried to place the taste before a sudden rumbling and swelling from her butt distracted her and left her flailing to not get pushed off the seat by her own rump.

“You like it? It’s my new special ???-shake! It’s ???-tank flavored~” Pinkie giggled, clearing out the cart to make room for Apple Bloom later.

“???-tank…? That’s my favorite flavor~!” Sweetie Belle blinked as her Silver Spoon head shrunk back down, shaking away the dizziness. “Wait, why would I… I mean, uhm… I did say it, and it does taste pretty good. And fizzy~” She giggled, taking more sips from her straw, slowly draining her glass as her rump rumbled and inflated.

Pinkie grinned, bouncing away again to leave the girls to their snacks and tend to the other customers of the shop. “Have fun then, let me know if you need any help moving when you’re done~”

~~~~~

“Ugh… I’m full…” Apple Bloom groaned and squished a hoof into her belly, squished into the available room in the cart. “Nothin’ like a good belly bed full of cider to lie down on for a nap.”

“Well, you’re not the one who has to pull your big belly bed around town.” Sweetie Belle squeaked and wobbled, blushing as the harness strapped around her rump squished her butt with each step pulling the cart.

“And you’re not the one who has to look at a huge white butt the whole way to Sweet Apple Acres.” Apple Bloom blew a raspberry in her direction. “Besides, it can’t be that heavy with Scootaloo helping lift the weight. Ain’t that right, Scoots?”

“Mmmh mmm-mmmh mmmfff!” Scootaloo wiggled her hooves and nodded faintly, her own tail tied to Apple Bloom’s as she bobbed in the air above the cart. Her body was almost completely round, squished in by her big stretched and inflated pink diaper, with only the inflated stumps of her hooves and the big ballooned cheeks of her head poking out of her body, paci still properly plugging her mouth.

“Yeah, well, don’t think I’m going to carry you all the way up to your room when we reach the farm.” Sweetie Belle wiggled her rump, taking a step back to squish it in her friend’s face to make her point before going back to trotting along and pulling the cart. “Think you’ll be able to walk when we get there?”

“Ah think Ah’ll be able to roll, at least.” Apple Bloom snickered. “Don’t worry, Ah’m sure Ah’ll manage. Or Ah’ll just have to ask mah sis to help.”

~~~~~

Apple Bloom huffed and sloshed, rolling and wiggling up to their farmhouse’s porch and flopping down on her belly bed for a quick break. “Ooog… Ah mean, Ah know there’s nothing such as too much cider but maybe mah belly could be workin’ along with me a bit more. We’re on the same side here, buddy.” She poked and squished her tummy again, letting out a fizzy burp and giggling. “Yer right, y’all are doin’ a lot of work already holdin’ all that cider.”

“Apple Bloom? That you?” The front door opened and Applejack stepped out, pausing to stare at her sister’s oversized belly before rolling her eyes. “Ah told ya to holler if ya need help gettin’ into the house, didn’t Ah?”

“Heheh, sorry sis. Ah was just about to. But Ah needed to tell you somethin’ important first, so can you come a lil’ bit closer?” Apple Bloom squeaked, head swelling up into a big puffy squeaky Babs head.

Applejack didn’t bat an eye, simply leaning in towards Apple Babs’ head. “Oh yeah? Well then, what’s so secret and important y’all needed me to mmmff mmm mmmh?” She flailed as big chestnut brown forelegs grabbed her and pulled her closer, pressing her mouth against the big balloony filly’s.

“Mmmh… mmmh… huh…?” Apple Bloom blinked, eyes spinning as she tried to shake off the dizziness. “Wha…? Did Ah miss something, sis?” She blinked, looking up at her sis Babslejack.

The older pony grinned down at her with her big ballooned chestnut brown and freckled head. “Nothin’ important, sis. Ah was just thinkin’ about how y’all might just be old enough to help with a very important Apple family duty.”

“Huh? I mean, yes! Ah’m absolutely old enough!” Apple Bloom perked up, trying to bounce in excitement but only able to wiggle and slosh helplessly. “What’s the very important duty? Ah’m totally ready!”

“Well, you’re already quite good at being a big silly sloshy cider barrel belly.” Babslejack grinned, a big bloated brown hoof stuffing something plump and rubbery into her mouth. “But every good cider barrel needs a spigot to supply all its friends and classmates and bullies and other customers with high quality Sweet Apple Acres cider.”

Apple Bloom scrunched and went a bit crosseyed trying to see the spigot sticking out between her cheeks. She tried and failed to spit it out, just to confirm that it was sitting secure and without leaks, then looked up at her sister again to nod eagerly. Her big sis said that this was an important duty so she definitely wanted to do it right and prove that she was responsible.

“Lookin’ mighty good on ya, sis.” Babslejack snickered, squishing Apple Bloom’s cheeks and poking her belly. “Ah’ll make sure to teach ya how to talk around it, or at least mumble around it. But first Ah think a little test is in order.” A brown hoof bapped the spigot and opened it up, holding a mug under it to fill it with fizzy frothy cider.

Apple Bloom’s eyes widened as she felt her belly slosh and rumble, fresh and cool cider rising up into her head and turning all her thoughts fizzy and bubbly as it poured out the spigot. She moaned and huffed around it a bit but dutifully held still until the mug was full, thoughts jumbled and full of fizz and bubbles even as the tap was closed again, her sister’s words echoing through her head like through a cider barrel as she talked about lessons and tips and being eager and grateful to serve her classmates, especially those three bullies of hers…

~~~~~

Scootaloo buzzed her wings, blushing and tumbling a bit through the air as the helium seemed to randomly shift between various parts of her body, making her float upside down from her big balloon belly one moment before stretching out and showing off her diaper around a massive butt the next, and bobbing from a giant pink head moments later before somehow inflating her wings into a big pair of lazily wiggling pillows. Still, it was definitely better than being grounded so she couldn’t complain too much, tumbling and drifting towards a familiar cloud house until she bumped into the front door, hoof flailing a bit until it hit the doorbell.

“I’m coming, I’m coming.” The door opened and Rainbow poked her head out, staring at the big orange and pink balloon on her porch for a moment before chuckling. “Well, looks like you really are my biggest fan now.” She snickered, poking the filly’s belly. “Hey squirt, classes already over? How was school and stuff?”

“Mmmh mmm-mmmf.” Scootaloo wiggled a little, bouncing up and down slowly on the clouds.

“Didn’t quite catch that.” Rainbow snorted, grabbing the paci-plug and tugging a few times before pulling it out with a loud POP and a long warbling squeak of a deflating balloon. She grinned and leaned back, flapping her wings against the breeze as Scootaloo blew out a steady stream of helium, shrinking down until only her pink head was still overly big. “There we go. Want to try that again?”

“Mmmh mmm-mmmf.” Scootiara mumbled, wiggling a bit and waddling a bit closer.

“Okay, now I’m not sure if that’s still the helium or if you’re just messing with me. Speak up, kid.” Rainbow raised an eyebrow, leaning in and turning one ear towards the filly.

“I said…” Scootiara took a deep breath, belly inflating a few inches before she grabbed Rainbow’s head and pulled her in, leaning forward to blow into the mare’s ear.

“Gyerk-“ Rainbow’s eyes widened and her wings flapped wildly as she suddenly started to feel lightheaded, more and more air rushing into her ear, Scootaloo blowing and blowing until she collapsed.

“Hehehe, got ya…” Scootaloo giggled, stumbling around a bit and eyes spinning as she felt more than a little big dizzy. She paused and shook her head clear, blinking a few times before she looked up at Diamond Dash’s oversized pink head with a grin.

“Hehehe, you sure did.” Diamond smirked back, stumbling and wobbling and flapping her wings to keep her balance. “I guess I did teach you a few things about pranking, huh? Well, that just means we can move on to the advanced stuff. I’ll teach you everything you need to know to be as cool and awesome and amazing as me. What do you say to that, huh?”

“You will?” Scootaloo jumped up, eyes wide and sparkling with excitement, eagerly shaking her frilly filly butt. “That would be the best! I was just thinking on the way here about how you’re the most amazing pony in Ponyville and if anyone knows how I can be the coolest and awesomest filly in town it’d be you and how I definitely don’t need to question anything you teach me…” She blinked, tilting her head a bit at the last part. It definitely had been going through her big balloon head earlier so it was probably right. And buttering up her idol was never a bad idea.

Diamond Dash snickered, turning around to squeeze her big head back into the house. “Don’t just stand out there, then, we have a lot of lessons to go through and not much time. That outfit of yours is a good start but we can make you sooooo much more awesome. We’ll definitely need to stop by Rarity’s place in a bit but first I can teach you a few cool moves and catchphrases~”

~~~~~

“Rarity! I’m home!” Sweetie Belle wobbled through the door of Carousel Boutique, letting out a squeak as her rump just barely squeezed through and quickly closing the door behind her with a blush. “Rarity?” She carefully made her way between ponnequins and racks of clothing, towards the back of the store.

Opening the door to the sewing room, she found her sister working away at another design at her sewing desk. “Hey Rarity, I’m home.”

“Hmm? Oh, welcome home, Sweetie Belle.” Rarity nodded distractedly, carefully sewing a sapphire into the fabric. “Did you have a nice day at school?”

“Uhm… not really?” Sweetie Belle carefully shuffled into the room, only to find her rump getting stuck in the doorframe. “Eep! I-I mean, uhm, Diamond Tiara and Silver Spoon were doing something weird in class to make fun of us? I’m not really sure how to describe it or what happened, exactly…” She twisted and reached around to squeeze and squish her rump to fit it through, air going into her head to blow it up big and silver-grey, her horn starting to glow.

“Mmmh, mmh, that’s nice darling. Let me just… now where did I put that emerald…?” Rarity frowned and started looking around her desk, shuffling swatches of fabric and other gemstones to the side. “Oh, I swear I had it right here… ah! How did you get down there?” She huffed and bent down to reach underneath her desk.

“I’ll help! Let me just, uhm…” Silver Belle wiggled and tried to tug her rump free, horn lighting up again to grab the door. Maybe just a little shove would… “Eep!”

The door slammed shut on her rump, sending her stumbling into the room and right into her sister with a squeak. She blushed as she realized that she’d ended up right up against her sister’s rump, muzzle pressed up against Rarity’s butt and unable to pull away again before the slap from the door pushed a good amount of air from her own rump up to the front of her body to rush out of her mouth, making her dizzy and lightheaded…

Sweetie Belle blinked and tried to shake her head, eyes widening as she realized where she’d gotten stuck, head squished between her sister’s big balloony cheeks. She quickly started flailing her hooves, pressing them into the other pony’s squishy inflated rump and pushing until she managed to pull herself free, stumbling back and landing on her own big butt with a bright red blush on her face. She quickly looked away from her sister’s rump, instead looking down at her own butt to see that it hadn’t actually shrunk down much, barely a few inches smaller than before and still quite cushioned and balloony.

“Sweetie Belle! Honestly, stop fooling around.” Sweetie Belle looked up to see Silvarity give her an exasperated glare over her big squeaky grin. “Maybe I should consider giving you some personal lessons about manners since that school doesn’t seem to teach you anything like that.”

Sweetie Belle blushed a bit deeper but couldn’t help but perk up. She’d been thinking just earlier about how to get her sister to spend more time with her and how to be more like the other unicorn, hadn’t she? And now Silvarity was offering to spend time with her and teach her how to be more like her? “Would you?! I-I mean, uhm, if you’re quite sure that’s necessary.” She wiggled and glanced away, trying not to look too excited about the prospect.

“Oh don’t pout like that, it’s unbecoming of a pretty little balloonbutt like you.” Silvarity grinned a bit wider. “It’s a great opportunity for you, darling. I know all about manners and you can trust anything I teach you. But how about if you pay attention and take my lessons to heart, I take some time to make you a new outfit that’s sure to bring out your best qualities?”

Author's Note

To anyone who hasn't seen it yet, make sure to check out this story I wrote in a collab with MintyCandy.
It has a stronger focus on hypnosis and diapers but it's just as silly as this one.

Back to the Statu-squork

The next day saw Diamond Tiara, Silver Spoon and Babs Seed standing in front of their school, whispering to each other and occasionally snickering and giggling as they waited for the final results of their latest prank.

“Oh look who’s decided to show up at school again.”

The three fillies looked up, then quickly looked away again to hold in their laughter.

“Yeah, yeah, laugh it up.” The new arrival snorted and posed. “But while you guys were at home laughing about that dumb, weird prank you pulled or whatever, I was getting personal lessons in being awesome from Rainbow Dash herself.

“O-oh really?” Diamond Tiara looked up again, biting her lip to hold in a snicker. “And how did that work out for you?”

“You can laugh all you want but Rainbow Dash taught me everything she knows about awesomeness and now I’m officially the coolest filly in Ponyville.” Scootaloo posed again, showing off her new look. Her inflatable rubber crown sat on her head atop a mane of ringlet curls with pink streaks and glitter worked in. She was wearing the frilliest pink dress that could be made within a day, with puffed shoulders and sleeves and a wide flared skirt short enough to show off her new diaper that was now more pink than orange and had sparkly hearts printed all over it. Her hooves were covered with fluffy pink booties and a pacifier with a heart-shaped pink guard hung from a colorful rainbow string around her neck. “She even got me this amazing new outfit! Rarity said not even the Wonderbolts have something like this.”

Diamond bit down on her own hoof, taking a few deep breaths to center herself before speaking up again, voice already cracking. “Y-yeah, I can definitely believe that. Coolest filly in Ponyville, huh?”

“It’s not even a competition. Rainbow Dash even taught me some awesome special moves!” She smirked and jumped into a dance, waddle-dancing on two legs, squishing her hooves into her inflatable diaper, doing a twirl and ending back on all four hooves with her butt in the air, shaking it right at the three fillies.
“I’m a little sissy, pink and dumb,
Got a frilly diaper around my rump~!”

Scootaloo smirked as the three bullies collapsed into wild laughter from her sheer awesomeness, proudly waddling past them and pushing her crinkly sissybutt into the face of any classmate she passed on the way to her desk, showing off some more of her new special moves.

It took a while for the three fillies to calm themselves down again enough to get up, only for them to break right back into giggles when they saw Sweetie Belle wobble up to the school. Diamond smirked and quickly stepped in her way. “Hey Sweetie Butt, is it just me or does your rump look even more massive than usual?”

The unicorn filly blinked, then blushed and smiled, turning around. “Thanks, Diamond Tiara. Rarity made me a whole new outfit to really bring out the size of my big dumb balloon butt.” She shook her rump a bit, showing off the huge pair of panties stretched over it, with phrases like “Kick Me”, “Slap Me”, “Hug Me” and “Squeeze Me” stitched into it in big bold letters. She yelped and fell forward as all three fillies kicked her big squishy butt, letting out a giggle and blushing a bit more. “O-oh, thank you for the compliments, everypony.” She squeaked and giggled even more as they kept slapping her buttcheeks to make them wobble and squish, clumsily getting up and making her way into the school.

Sweetie Belle squeezed her way through to her seat, blushing and waving at her friends as her classmates complimented her with more kicks and slaps and squeezes on her butt. “H-hey girls! Were Diamond Tiara and her friends weirdly nice to you today, too?”

“Mmmh mmmf mmh.” Apple Bloom nodded, flailing her legs a little as she rested on her big sloshy belly, spigot in her mouth. “Mmmr mm-mmh.”

“I think they were just embarrassed that their weird prank yesterday didn’t work like they wanted. Especially after I showed them one of the awesome new moves Rainbow Dash taught me. Check this out!” She smirked and jumped into a pose again, shaking her butt at them before prancing back and forth at her desk. “Frillybutt~! Sillybutt~! Sissy prissy princess strut~!”

Sweetie blushed a bit more but oohed and ahhed at her friend’s performance. “I see… wait, is that why we got so much room now? I do feel a bit bad for making them give up their chairs and desks…”

“Hey, this is just what they get for being big dumb bullies all the time. If you ask me, they should be happy they get our awesomeness instead of their dumb desks. Isn’t that right?” She looked over her shoulder and stuck out her tongue, blowing a raspberry.

“Gosh, I don’t know. Are you sure your awesomeness is enough to compete with a basic piece of furniture?” Diamond Tiara smirked as she sat down on her stool behind the pegasus, giving a challenging look.

“I’ll show you how awesome my frilly silly prissybutt is!” Scootaloo huffed and scrunched, shaking her rump before crouching down at her own desk, her big pink diaper in the air right in front of the other filly. “I’ll be the bestest and buttest desk you’ve ever seen! You’ll never ever want to go back to a normal desk after having my big pink prissy princess diaper in front of you all day.”

“Mmmh, I guess we’ll just have to see.” Diamond snickered, plopping a fresh piece of paper and some pencils down on the diaper. “How about you girls~?”

Babs and Silver snickered and nodded, wiggling their butts as they got comfortable at their normal school desks… but each sitting on one side of Sweetie Belle’s big oversized rump instead of their own stools, bouncing and wiggling playfully. “It sure is comfy. I wouldn’t mind this arrangement.”

Diamond grinned and turned to her other side, pulling out some empty mugs and tapping Apple Bloom on the cheek. The farm filly turned her head and held still, belly sloshing and fizzing and her eyes rolling dizzily as three mugs’ worth of cider bubbles through her head, blushing but holding still like a proper Apple.

Diamond snickered and passed two of the mugs to her friends, setting down her own on the big pink diaper in front of her as well. She was already looking forward to the rest of the week and wondering how many times they’d be able to ‘accidentally’ run into the other group of fillies over the weekend.

Author's Note

This story is marked Complete but I might still end up writing some bonus chapters about what happened in between scenes and in the rest of the week, that didn't fit into the main story because they'd be mostly just random silliness and pranks. I also might end up making a sequel of the resulting prank war at some point, probably depending on how many people are interested in it compared to my other story ideas.