The Cake Twins and a Baby Pie

by Foal Star

Rating: everyone
Tags: My Little Pony: Friendship is Magic, Alternate Universe, Comedy, Pinkie Pie, Cake Twins
Length: 33394

Pinkie Pie was somehow regressed to a one year old foal by chaos magic. But the Cake twins also grew into adults as well. What can go wrong?

Thie story takes place after the episode Baby Cakes

Pinkie Pie is left in charge of caring for the Cake Twins for an entire week. But somehow while Pinkie was feeding the foals she didnt realise that the muffins she fed them had chaos magic left behind by Discord. Soon Pinkie Pie was regressed into a baby and the Cake Twins are now adults and are scared of getting in trouble. So they try to care for Pinkie Pie and open Suagrcube Corner on their own. But this could be too much for the twins as they learn being an adult is much harder then they thought.

Editor: Superpinkbrony12

Shout out to Reverse Scratch for the idea

Published 2018-10-19 10:20:01 UTC
Last updated 2019-06-18 18:33:27 UTC

Chapter one: Were Big Ponies now

Pound Cake and Pumpkin Cake were both confused on what was going on, as they looked over their new adult bodies. Pound Cake looked himself over, seeing his now giant wings he flapped them. Then he saw how pudgy he looked as well as how big he was, whisking his long brown tail. He giggled and chirped. “Wow, I look great! Look how big I am!”

Pumpkin Cake poked the belly and laughed. “You still got all your foal fat, look how chubby ya are, fatso!”

Pound Cake scoffed and turned to his sister. “So what? I got Mommy’s body and she’s chubby. You look more like Daddy, he’s a lot less fat!”

Pumpkin Cake was amazed as she looked over her taller, skinner body and squeaked in surprise. ”This is super cool! I do look like Daddy! And you look like Mommy!”

The stallion looked around and shouted. “We gotta show Auntie Pinkie Pie that we're big ponies now! She’ll be so surprised.”

His sister looked around and nervously asked. “By the way, where is she? Pinkie was just feeding us before we got turned into big ponies and lost our diapers.”

Then they heard baby gibberish, and both ponies slowly looked down. They saw that Pinkie Pie was now a little pudgy pink foal, and holding her hooves up while whimpering and babbling. Clearly, she wanted to be picked up. The twins both looked down with horrified looks as Pumpkin squeaked in horror. ”Is...is that Pinkie Pie?!”

Pound Cake bent down and poked Pinkie’s pudgy body, making her giggle as she threw some confetti into the stallion’s face, causing him to stumble backward and gulp. “Yep, that’s Pinkie Pie, alright.”

The pink coated little filly gave a nod and held out her hooves again, still insistent on being picked up. However, the two Cakes gulped nervously, and they gave each other nervous looks.

Pumpkin Cake picked up the little foal with Pinkie Pie giggling and kicking her legs about in excitement. She looked Pinkie over, seeing that she didn’t seem much different than when she was an adult with her pink coat and big poofy pink mane and tail. But she was pudgier with a chubby belly and cute, stubby hooves. Pumpkin Cake couldn’t help but daww a little as she whispered in a sweet tone. “Well...um...I guess we're the big ponies now, and we have to take care of Auntie Pinkie.”

Pound Cake was walking back and forth nervously as he exclaimed, “But what do we do?! Mommy and Daddy are going to be gone for a long time! We don’t know anything about taking care of foals! Or how to run Sugarcube Corner!”

Pumpkin Cake sighed as she looked over at Pinkie, still floating about in her magic while kicking and giggling. She pondered for a bit and whispered. “They said they’ll be gone for a week, how long is a week, brother?”

Pinkie Pie sat up, started to babble something, and pointed a hoof to a calendar. Pumpkin Cake came over to it and Pinkie placed a hoof on the seven. Pumpkin whispered. “That’s seven. A week is seven days?”

The little foal gave a nod, and Pound Cake squeaked in horror! “Seven days?! We're going to be big ponies for that long?!”

Pumpkin slowly placed Pinkie on the ground and whined. “What do we do?! I mean, we have to run Mommy and Daddy’s store, and take care of a foal! That’s impossible!” The two ponies looked at each other, then suddenly the two both plopped on their rumps, burst into tears and started to bawl. Pinkie Pie rolled her eyes, stomped on the ground and shouted something in baby gibberish.

But the two ponies continued to complain.

Pound Cake stomped a hoof and shouted. “What are we going to do?! We’re too big for diapers and we don’t know how to use the potty!”

Pumpkin Cake nodded and continued to cry as she whined. “Yeah, we also have no idea on how to bake a cake!”

The stallion fussed about and shouted. “Not to mention we don’t know if we’re going to be able to even care for foals! I mean, we were just foals ourselves, I don't know how to change a diaper! Mommy, Daddy, and Auntie Pinkie always changed our diapers.”

Then all of a sudden, a hissing noise broke through the crying and whining. Both ponies turned to see Pinkie Pie with a huge blush on her face, as she was now slowly wiggling away from a puddle of urine on the ground, looking quite ashamed.

Pound Cake shook his head and grumbled. “Well, it looks like we need to get Pinkie Pie in a diaper, I think.”

Pumpkin gave a nod as she lifted the blushing filly with her magic and whimpered. “Right, she can’t go potty on the ground. Let’s... um... take her to our nursery. Maybe it’ll still have our diapers.” The two then quickly ran up the stairs before Pinkie could suffer another accident on the ground (they would clean up the current one later).

Pinkie Pie was now sitting on the changing table watching the Cake Twins scrounge through the drawers underneath , taking out tons of diaper changing supplies. They were both a bit unsure of what they needed, but they still took everything into their hooves and placed them down.

Pumpkin took out a cute, white, poofy diaper and explained. “Mommy doesn't use these a lot because they’re expensive. But they’re better than the diapers we wore.”

Pound gave a nod of agreement and chirped. “Yeah, and they're more poofy and comfortable than the normal ones. But we need to put foal powder on her first.” He took out the bottle of foal powder and pounded on it with a hoof. Pinkie Pie squealed as the white powder was blasted all over her, turning the pink filly’s coat into a pasty white. Pound Cake squealed in terror at what he did. “That’s way too much!”

Pumpkin sighed as she took out a foal wipe and cleaned the excess powder off Pinkie. “Next time, I’ll do that, brother,” She then slid the diaper under Pinkie’s rump and slowly began to tape it up. The mare didn’t realize she was taping it up backward until she saw it and groaned. “Oh dear. Diaper changing’s harder than the grown-ups made it look,” Pound Cake and Pinkie Pie both burst into fits of laughter as Pumpkin’s face grew red. “Hey, this is my first time doing this!”

Pound Cake snickered. “Oh yeah, well just don’t tape it over her head. Remember when Auntie Pinkie had a diaper on her head and another on her butt? She looked so silly.”

Pound Cake and Pinkie Pie both returned to laughing as Pumpkin’s face grew red. She then took a diaper within her magic and shoved it over Pound Cake’s head. He got angry, so he took the foal powder and threw it into Pumpkin’s face! She squeaked as the powder enveloped her, then she made a dozen diapers with her magic.

Pinkie then got up and stomped a hoof as she pointed at her diaper taped backward around her rump. Both ponies looked over and sighed, seeing that Pinkie still needed their help. Clearly, she was the most grown-up of the three.

Pumpkin reluctantly stomped over and untaped the diaper, then taped the padding up the right way after a few more attempts and adjustments. Eventually, she had Pinkie’s first diaper taped correctly around her rump. The little pink foal squealed in delight on seeing her first diaper, and bounced up and down while babbling happily!

The two former foals just watched the little cutie dance about, until the little filly’s tummy rumbled and the two adults both giggled as Pound shouted to Pumpkin. “You changed her, that means I get to feed her!” He then picked the filly up and ran downstairs as Pumpkin groaned and chased after her brother.

The twins eventually reached the kitchen where Pinkie Pie was now strapped into a spare highchair with a cute little bib strapped around her neck. But the filly watched with a worried look, seeing the twins going through the pantry while trying to figure out what foal food to feed her.

Pumpkin watched as her brother was busy stirring Mashed Yams with oatmeal into a little plastic blue bowl, getting foal food all over himself. Pumpkin Cake chuckled and asked. “Are you sure you don’t need any help, brother?”

Pound Cake scoffed. “Oh stop it, sis! If you can change a diaper, I can spoon feed Auntie Pinkie. Watch!” The stallion then stomped over with the bowl and started to spoon feed Pinkie Pie, giggling upon seeing her making cute sucking noises as she ate. But the clumsy stallion kept missing her mouth, promptly sending the food all over her face.

Pinkie laughed and bounced about, clearly loving the mess made from mashing the foal food over her tray.

But Pound was getting frustrated and he whined. “Stop moving around, Pinkie! I’m trying to feed ya!”

Pumpkin smirked as she commented. “See, brother? I told you we weren’t meant to play with our food when Mommy and Daddy feed us.”

Pound Cake threw the bowl of foal food at his sister, splattering it all over as he growled. “You did it too, ya poopy head!”

Pumpkin took the bowl off and shouted as she lifted a bag of flour! She was going to throw it at Pound Cake with her magic, but Pinkie started to babble angrily and throw something of a tantrum.

Pumpkin reluctantly set the bag down and grumbled. “Look, you can continue to feed Auntie Pinkie. I’ll find something for us to eat,” Pound scoffed as he started to scoop foal food into a plastic bowl. Meanwhile, Pumpkin was now looking into the fridge. “I think I’ll make us sandwiches, and there’s some milk in the fridge we can drink.”

Pound sighed in relief and whispered. “Good. After all this I could use a good bottle, and a nap.”

Pumpkin gave a nod of agreement as she began making sandwiches with her magic, struggling just to spread mayonnaise on the bread. She also slowly placed some vegetables down on the bread to add flavor.

Pound cake finished feeding Pinkie a short time later. She was stuffed with foal food. But Pound Cake and Pinkie Pie were both covered in orange paste, and the stallion sighed. “Okay, I’m done. Now can we start to clean up.”

Pumpkin Cake came over. She began wiping off her brother and the little filly, who yawned. “She looks tired. Let’s give her a baba, then put her down for a nap.”

Pound Cake gave a nod and yawned. “Good thinking. Heck, I could use a nap too. I’m exhausted.”

Pumpkin gave a nod of agreement. “Let’s get this little one to sleep first. Then we can talk about what we should do,” She then took Pinkie Pie upstairs, placing the little filly in her old crib. She made sure to tuck Pinkie under the sheets and kissed her goodnight. “Night night, Auntie Pinkie. Sweet dreams.” She then slowly went downstairs to eat her sandwich.

Pound Cake was already munching on his sandwich with an odd look on his face as he gulped down a bit and whispered. “Eating big pony food is weird.”

Pumpkin giggled as she sat across her brother, took up her sandwich, and started eating. The mare blinked, realizing that her brother was right. It felt so odd to be with eating with teeth instead of gulping down goop.

Still, the two continued to chew and swallow for a while, eventually finishing their sandwiches. Then they took two baby bottles filled with milk that Pumpkin had prepared for them. They started to suckle on their tiny bottles with blushes growing on their faces.

After their meal, Pound Cake sighed. “Well, sis, we can’t sleep in our cribs anymore. Do we have to sleep in Mommy’s and Daddy’s bed?”

Pumpkin Cake gave a nod as she explained. “Well, that's the only big pony bed other than Pinkie’ Pie’s.Would it be okay if we slept in the same bed?”

Pound Cake gave a nod and sighed. “Yeah, that’s fine. But we should probably find something to make sure we don’t make messes either. I...I’m not really sure if I want to use the potty, even though I think I know how to use it, just a little bit..”

They both looked at each other with uncertainty and Pumpkin whimpered. “Doesn't it make that scary flushing noise when you use it?!”

Pound gave a nod and whimpered. “Yeah! I don’t wanna get flushed down! Nothing that goes into the potty ever comes back out!”

Pumpkin nodded and agreed. “I don’t wanna get flushed down either, let’s go find some big diapers instead! Or maybe another pony to care for us. I dun wanna be a big pony yet!”

Pound got up and exclaimed. “Yeah, let's go into Ponyville and find somepony to help us!”

Pumpkin got up and squealed. “Right! When we find that pony, we need to tell them that we’re babies too! Then they can care for Pinkie Pie, and us!” They both put their hooves together, before they both ran out the door in search of help!

Chapter Two: Dr whooves to the rescue

As the Cake Twins were setting out on their journey, Dr. Whooves and Derpy were both strolling through the streets of Ponyville, enjoying each other’s company. Derpy fluttered by and yawned, “I feel better that your parents took Ditzy for the week. But honestly, what do you want to do now that we don’t have the kid to worry about?”

Dr. Whooves just waved his mane and responded promptly. “You don’t think that I have things planned? Trust me, I have us on a perfect schedule for our week off.”

Derpy giggled as she fluttered by her partner. “Well, I have to admit that I usually don’t follow schedules. I rather just go around Ponyville and try new things. I’ve got my job as a mail carrier to keep me content.”

The mare’s husband looked at her and scoffed lightly. “Seriously? We can’t just wander the streets of Ponyville aimlessly! We need to have a plan, so everything runs smoothly!”

Derpy snickered and placed a hoof on her husband’s shoulder. “Dear when does anything in your life runs smoothly? Don’t act like I don’t know what you really do for a living.”

The doctor couldn’t help but blush as he asked. “So, you know that I can travel through both space and time? I thought I had convinced everypony that was just a myth.”

Derpy giggled. “Don’t worry, I won’t tell. But you’ve got a lot of explaining to do, Mister Scientist.”

The stallion just waved a hoof and casually replied. “All in good time. For now let’s just focus on getting to Sugarcube Corner, ok. I’m starving!”

Derpy gave a nod as she continued to fly alongside her husband, as they came upon two unfamiliar ponies running through the streets. One was a large, tan coated pegasus bouncing around and asking for help among other ponies that were walking down the streets. While the unicorn mare was pleading desperately for help.

Derpy and Dr. Whooves both gave each other nervous looks before they ran over to the two odd ponies, not one to ignore a cry for help.

Pound Cake instantly recognized the two ponies, having seen them a lot at his parents; shop and he stomped over as he hugged Dr. Whooves. “Doctor! Thank goodness we found you!”

The Doctor squeaked as he was thrown back and into the dirt as he gasped. “Get off!”

Pound Cake stepped off the stallion and whispered. “Me sorry, Doctor. Me got a little over excited.”

The other earth pony heaved as he got up and responded. “It’s alright. Now please tell me, who are you? You look oddly familiar.”

Pumpkin Cake meekly trotted forward with her head bowed as she whispered. “We Pound and Pumpkin Cake. We big ponies and we need help.”

Both Derpy and Dr. Whooves blinked and paused for a few moments before the two burst into fits of laughter. The doctor got up and wiped the tears from his eyes. “Wow, that’s a good one! Pound and Pumpkin Cake?! To be honest, you two do look like them. But who are you, really?”

Pound and Pumpkin Cake both gave each other questionable looks and Pumpkin was the first to turn around and replied. “But we are Pound and Pumpkin Cake, seriously!”

Pound came over and pleaded. “Yeah, we really needs your help! Mommy and Daddy left us with Auntie Pinkie Pie, but then some magic muffins turned us into big ponies and Pinkie Pie into a baby! But we no know how to be big ponies!”

Derpy fluttered over, gave the two a long look, and gasped upon seeing the resemblances couldn’t be just a coincidence! “Honey, I think they’re telling the truth! They don’t even have their cutie marks! That’s not something that just happens!”

Dr. Whooves gazed at the two nervous ponies and squeaked out loud. “Seriously?! Grown-up foals?! How could this happen?! It’s scientifically impossible!”

Pumpkin began to throw a little temper tantrum as she whined. “Why you no hear my brother?! We transformed into this by some magic muffins! Now come over to Sugarcube Corner and help us! We no can take of Pinkie Pie by ourselves! We not know the first thing about baking or taking care of a baby pony. Heck, we not even sure we can use the big potty. It too scary!”

The doctor turned to his wife. “Well, dear, it looks like our date has to be cut short for now. We need foal items for Pinkie Pie, and it looks like adult diapers for the older foals, just in case.”

Derpy saluted. “Right, I’m on it! I know the stores of Ponyville like the back of my hoof!” She flew off to go grab the foal items, as Dr. Whooves turned towards the twins and instructed. “You two come with me! We can’t have you leaving a mess on the streets! It’s not sanitary, and there’s no flowers or plants for you to fertilize.”

The twins both gave nervous nods as they followed Dr. Whooves towards Sugarcube Corner. Hopefully, this grown-up and his wife could help them.

Dr. Whooves couldn’t believe his own eyes as he entered what had been the twins’ nursery and gasped upon seeing the baby Pinkie Pie fast asleep in the twins’ crib. He then turned towards the two grown-up baby ponies in front of him and whispered (so as not to wake the regressed Pinkie). “So you were telling the truth. Somehow, Pinkie Pie was transformed into a baby and you two turned into adults. Never have I seen such a thing before,” They then all quietly left the room and went downstairs. There, Dr. Whooves stroked his chin and whispered, “Well, there’s only one thing we can do from here, we need to tell Twilight!”

But the twins immediately shouted. “No! No, tell Twily!”

Dr. Whooves looked up with a surprised expression and asked. “Whyever not?”

Pound Cake whimpered. “Well...wouldn't Auntie Pinkie Pie get in trouble for feeding us muffins? We dun wanna get her in trouble!”

Pumpkin Cake nodded. “Yeah! Please don’t tell Twily! It not Pinkie Pie fault!”

But Dr. Whooves just chuckled. “Oh, don’t worry. I’m sure Twilight will understand. Besides, this isn’t the first time she has had to deal with a pony being regressed into a foal. Haven’t you been hearing about all these other ponies turning into foals?”

Before the twins could reply, they heard a knock on the door. And who should enter but Derpy with a bag of diapers and various foal items for both little and big ponies, along with Twilight Sparkle herself?

Derpy looked up with a smile on her face. “Look who I found while I was out!”

The twins groaned as the unicorn stomped into Sugarcube Corner quite angrily and growled. “I cannot believe another pony was turned into a diapered foal! Seriously, I thought we’d stopped this! Now it’s not only turning grown ponies into foals but foals into grown ponies! This is getting ridiculous!” The twins were a bit nervous as Twilight looked over the adults that were once foals and asked. “So, I was told you two are the Cake Twins all grown up?”

Pound Cake gave a whimper as he nodded. Twilight was now a bit curious as she looked at the twins over and whispered. “Wow, it's really cool to see you two grown up like this. You even know how to talk. Oh, if only I’d thought to bring ink and parchment with me.”

Pumpkin was nervous as she asked. “Yes, um thanks, Twily. But you can turn us back into babies, right?”

Twilight came over to the magic muffins that had been left out and sighed. “Maybe eventually. These muffins are what triggered the transformation. I’ll have to look over them and see what I can do. Until then...I think it’ll be best if Dr. Whooves and Derpy stay here to look after things.” Both of the Cake twins sighed in relief as Derpy, and the doctor both groaned.

Twilight blushed and apologized to them. “I’m sorry, but we can’t have two full-grown babies running around Ponyville unsupervised. Not to mention Pinkie Pie is a foal now, she obviously can’t be trusted to keep them in line.” The unicorn shivered as the thought of Pinkie Pie as a baby running around Ponyville, diapering ponies and throwing foal powder everywhere while shouting “Diapee pawty!” came into her mind. She shivered in fear and whispered. ”I can only imagine how she’s going to be as a foal. Somepony needs to keep her under control as well. Otherwise, she’ll surely make a mess. In more ways than one, probably.”

Both Dr. Whooves and Derpy both gulped as their ears went behind the back of their heads. Then Twilight tried to reassure them. “But it’ll only be for a day or two. I’m sure I can come up with a cure or something by then. Besides, maybe this time the regression will wear off eventually, and everything will go back to normal.”

Twilight then quickly sped out of the cafe, leaving the other ponies with looks of uncertainty. The quiet was broken when Derpy held out the diaper bag. “Well, I guess it’s time to diaper you two up. Can’t have you leaving puddles on the floor.”

Both Pound and Pumpkin were now blushing, looking down at the biggest and thickest diapers the two had ever seen. The padding seemed to rise up like massive pillows of poof now securely taped around their rumps. Walking had appeared hard before, but walking around with their new undergarments looked like it would be a chore. Still, at least they wouldn’t have any more accidents to clean up, so that was a relief.

Derpy was looking down at her handy work and scrunching the diapers with a hoof, checking to determine if she did it right. “Hmm, I think I need to adjust the straps, they're a bit lopsided. Hold still, you two.” The two big foals groaned as Derpy went about adjusting the diaper straps, while Pound and Pumpkin gave each other confused looks.

Derpy then helped both ponies up as Dr. Whooves was coming downstairs and proclaimed. “I stored all the extra foal supplies in the nursery, and thank Celestia Pinkie Pie is still asleep in her crib.” He came down the steps and nearly doubled over in laughter upon seeing the two big foals with their diapers looking lopsided.

Derpy sighed and asked. “Honey, can you help? I never had to diaper foals this big before. Dinky had outgrown her diapers by the time she was three, and even then you were usually the one changing her.”

The stallion trotted over and helped fix the tabs around the foals waist as he cooed. “Oh, don't worry, Derpy. You did a pretty good job. It has been a while since either of us has touched a diaper, of course, we’re going to be rusty the first time getting back into it.” He then took each foal by the hoof and helped them up on all fours.

The twins looked around with deep blushes, seeing the massive diapers behind them poofing outwards and spreading their legs apart far more than their diapers had when they were just foals. Dr. Whooves then replied. “Now, while Pinkie is napping, how about you two play downstairs? I'll find some toys for you.”

The two adults looked at each other as Pound Cake commented. ”Well...I think Mommy and Daddy want to have the shop running, so they make money.”

Pumpkin nodded. ”Yeah, if it open not then they gonna run out of money! Then we won’t have enough money for diapees! And it is all our faults!”

They both began to whimper as Depry fluttered over, gave each adult sized foal a pat on the head, and cooed in a reassuring tone. “Oh, don’t worry about that. Sugarcube Corner doesn’t need to run every day, you two will be just fine. We only need to keep it closed for a day or two until Twilight finds the cure.”

But Dr. Whooves stroked his chin. “Not really. I think we wouldn’t want to have to Mr. and Mrs. Cake know about this, or it could cause them to panic. To keep up appearances while Twilight is making a cure, we should run Sugarcube Corner as they would, in addition to taking care of the foals.”

Derpy put her paws on her hips and asked. “How do you think we should do that? We don’t know anything about baking, not to mention we have two big babies and one small, crazy baby to care for. We’re not miracle workers.”

Dr. Whooves adjusted his bowtie as he explained. “Well, it’s not like we don’t have experience caring for foals. We raised one of our own after all, and I can use my genius to make a machine to bake for us. As for our two big babies…” He tapped a hoof to the chin as he pondered. “I think we can pull it off saying they’re distant cousins of Mr. and Mrs. Cake who are incontinent. If anypony asks, we’ll tell them that Fluttershy took the twins to her cottage because Pinkie Pie is sick with the horsey hives, which is why these distant cousins came to help us.”

Pound Cake blushed. “But we dun know about being big ponies. We no know how to act or talk like them.”

Dr. Whooves came over. “Well, for today I can teach you two how to be big ponies a little. Maybe even help you learn how to use the potty enough to where you won’t need diapers, and we won’t need the incontinence part of the cover story,” He then looked down at their diapered rump and sighed. “But first, you two need some clothes…” He turned to Derpy and asked. “Would you mind watching Pinkie Pie while I’m taking care of these two?”

Derpy gave a nod as she smiled. “Sure, that’s fine,” She then came over and chirped. “Was this a part of your plans?”

Dr. Whooves blushed as he led the Cake Twins upstairs.

The two were now in their parents’ upstairs bedroom, as Dr. Whooves was helping the two into their new outfits.

Pound Cake now wore a thick, white apron and a chef’s hat that sat upon his head, while Pumpkin Cake wore a cute, light blue apron tied around her waist. Both blushed to see their diapers poking out the back as Dr. Whooves clapped his hooves. “Wonderful, you two look amazing! Now, I need to know if you can get some basic things down into your little foal minds,” They both turned around and looked over as Dr. Whooves explained. “You two look presentable for now. But you two need to sell two major things about being adults. First of all, look up and present yourself. “

The two then stood up straight, looking up proudly as Dr. Whooves walked around the two ponies and pressed a hoof into their diapers, hearing them crinkle “Now, walk just like this,” He strode through the room with his head in the air and walked around the room as he turned back to the two. “Now you try.”

The two ponies did their best, but the thick diapers made them have a big, adorable, and noticeable waddle. The diapers are crinkling and shaking back and forth. Afterward, Dr. Whooves clapped his hooves. “That was pretty good, you two are naturals,” The two beamed smiles of pride as Dr. Whooves came forward. “Now, you two don’t need to worry about baking as that’s way too complicated. Same goes with dealing with the cash register. All you two should do is help serve the customers their food.”

Pound and Pumpkin both smiled as he then took two silver platters with straps attached to them, and placed one on Pound Cake’s back and one on Pumpkin Cake’s back. The stallion then set blocks on their back platters and explained. “Now, I know you two don’t have a lot of balance, so I strapped them onto your backs,” The stallion then sat down in a small chair with a small table and instructed. “Now then, please serve me the fake foods.”

Pound and Pumpkin gave each other nervous looks as they then proceeded over. Pumpkin grunted as she used her magic to place her blocks on Dr. Whooves’ plate. But Pound tried using his wing and squeaked as he stumbled, backward falling on his padded rump with a loud plumph! The big, plump stallion squeaked and cried. “I sowwy!”

Pumpkin Cake smirked as she threw back her head and laughed. “Ha! I am less clumsy than you!

Pound Cake kicked about, making his diaper crinkle quite loudly as he whined. “Tat not fair! She has magic, and I dun. She cheating!” He threw his forehooves over his chest and grumbled.

Dr. Whooves sighed. “That’s okay, Pound Cake. Maybe you can’t serve food, but I have another important job for you,” He helped the stallion up onto his hooves and fixed his apron, then proceeded over to the diaper and fixed it with his magic as he asked. “How about you instead go and greet ponies as they come through the door or leave?”

Pound Cake eyed Dr. Whooves as the stallion went to the door of the nursery, opened it, and explained. “Now, you hold the door while I walk through, and you simply say good day.”

Pound Cake then waddled over to the door and held it as he turned towards Dr. Whooves who went through the doorway. The big foal bowed and stammered. “Go...good day, sir!”

Dr. Whooves gave a nod of approval. “Very good! I think we have your jobs!” The two beamed smiles of pride as he added. “Now then, we also need you two to have new names, so ponies don’t get suspicious,” The twins both blushed as Dr. Whooves smirked. “Pumpkin, I think you will be Spice Cake from now, and Pound you will be called Cream Cake.”

They both looked at each other and shrugged as Pumpkin asked. “Are you sure it a good idea to lie to ponies?”

Dr. Whooves replied. “Well, yes. I know it seems bad, but most ponies think the age regression epidemic is over. We don’t want to cause a panic. But we must not let Pinkie Pie downstairs, she’s too recognizable. She’ll blow our cover story completely.”

They both shrugged, and Pound Cake commented somewhat nervously. “Bu..we still dun know much else about being adults. Are you sure tat's all we needs to know?”

Dr. Whooves gave a nod. “Of course I'm sure. Twilight will undoubtedly have a cure in a day or two so that should be good enough. We can worry about more optional things later. Now, how about you practice your jobs while I make a machine to bake the goods?”

The two twins chirped. “Okay, Docta!”

Dr. Whooves blushed and quickly went back downstairs as Pumpkin Cake exclaimed. “I gonna practice serving ponies!”

Pound Cake whined. ”Yeah?! Well, I gonna practice letting ponies through a door! I’ll do it better than ya do ya job!” He humphed as he opened the door and practiced chirping. “Have a nice day!” While Pumpkin looked around to see a doll and placed her on one of the chairs. The mare then continued to practice her adorable diaper waddle, while making sure to serve her blocks on the platter to the doll.

Meanwhile, Derpy had taken baby Pinkie Pie downstairs. Pinkie was babbling incoherently as Derpy opened up to the kitchen to see a giant cylinder-shaped robot with mechanical arms. Derpy slowly walked up to her husband and cooed. “Hey, Pinkie Pie is up.”

Dr. Whooves pulled out from under his giant robot and blushed. “Sorry, did I wake her?”

Derpy shook her head. “No she was getting fussy he messed her diaper, and I had to change the poor dear.” The mare then placed Pinkie down as she trotted over towards Dr.whooves in her thick diaper with an adorable waddle. Dr. Whooves dawwed. “Oh, she reminds me of when Dinky was a baby!”

Pinkie Pie giggled. “I dun know about tat! But I am pweety cute, I bet!!”

Dr. Whooves smirked. “Don’t let it go to your head, missy.”

Pinkie Pie looked up at Dr. Whooves and gave him a questionable look as she babbled, “How can ya undewstand foaw babble? Nopony can do tat!”

Dr. Whooves smirked. “I've been studying the language of foals for years. It’s actually quite advanced, it’s not just goo-goos and gaa gaas.” The two continued their conversation as Depry watched with a surprised expression on her face hearing both Pinkie Pie and her husband speaking in foal babble.

Afterward, Pinkie then waddled over to the doctor's toolbox and exclaimed. “Weww, ya maybe a supew smawt pony but ya wong about one ting, I'm cwaziew ten Dinky Whooves, watch!” She then took a hoofful of nuts and bolts, shoved them into her diaper and started to dance around, throwing the metal pieces all over. The Doctor and Derpy squeaked and burst into laughter.

Dr. Whooves quickly took Pinkie Pie into his hooves. “Yeah, I'm betting you’re going to be one heck of a trouble maker. Now I have a few questions for you.”

Pinkie giggled as she kicked about, making the metal clink in her thick diaper and she asked. “What is it?”

Dr. Whooves continued. “Well, I want to know if Mr. and Mrs. Cake left any special instructions?”

Pinkie paused as she remembered that Mr. and Mrs.Cake said they wanted to keep the shop closed while they were gone. But, she saw Pound and Pumpkin Cake having so much fun getting ready to run the shop. So she shook her head and babbled. “Nope, just the usuaw stuff about keeping the foaws safe. tat's aww.”

Derpy was unable to hear a word the two were saying and came over and asked. “So what did you two discuss?”

Dr. Whooves chuckled as he nuzzled her, making the little filly gurgle and coo as he replied. “Oh, nothing. I was just making sure she was okay. She also mentioned that Pound and Pumpkin are still practicing being adults, right?”

Derpy gave a nod. “That's right, the other foals have been practicing all evening. I think I’ll make something for dinner for the hungry babies, then get them to bed soon.”

Dr. Whooves sighed as he placed Pinkie down and let her suck on a pacifier “I’m sorry this whole thing ruined our date. I was hoping we would have some alone time.”

Derpy came over, picked Pinkie back up, and gave her a boop on the nose as she placed the foal on her back. “Oh stop it! You know how long it’s been since I last changed Dinky’s diapers! I'm going to have a great time.”

Dr. Whooves chuckled. “I love your optimistic attitude.”

Derpy scoffed. “Oh please, you need just to stop being a pessimist.”

Pinkie’s tummy made a loud growl as she placed her hooves over her belly and scrunched the diaper between her legs making the padding crinkle. Derpy dawwed and cooed. “I’m going to go feed the babies. Good luck on your project honey.”

Dr. Whooves nodded and replied. “You should check her diaper for screws and nuts first. She put a whole bunch into her diaper,” He added. “I should probably invent something so you can understand her, in case she needs something, and I’m not there.”

Derpy blushed and nodded. “Right, I'll give the little Pinkie a diaper change. You work on your inventions.” She then carried the baby Pinkie Pie away who was blushing as she nuzzled into Derpy's mane and squealed. “Being a baby is great! I can do whatever I want and get away with it! I can have fun all day long, and nopony can stop me! I just hope Twilight doesn't find a cure too soon! I’m gonna get to have some fun!”

Chapter three: There's Chaos a Foot

The next day, the two big foals woke up in their parents’ bed (with Pinkie Pie sleeping in their crib they had been forced to sleep elsewhere). The two foals yawned as they both slowly got up, blushing and looking down to see that their diapers were sodden with giant yellow stains, seeing that they both soaked their padding. Pound Cake giggled. “Looks like we both still bed wetters.”

Pumpkin Cake smiled. “Yeah. Good ting we got these big diapees, our normal diapees would probably fall apart with this much pee. But at least we no have to use big scary potty.”

They then both turned to see on the bedside table that there was two big foal bottles filled with formula. The two adult sized foals quickly each grabbed a bottle and began to down the milk in large gulps.

Then Derpy came into the bedroom, smiled at the big foals and cooed. “Oh, just look at my big babies! Drinking big bottles of milk in soggy diapers!”

They both blushed as Pound Cake placed his hooves over his sodden diaper and whined. “So wha? We not supposed to be big ponies anyways. We just stuck like this until Twiwy can fix us.”

Derpy couldn't help but laugh as she responded. “I know, I’m just teasing you two. Twilight will find a cure in time, and if not I’m sure my husband will invent something to make everything right.” She then placed the two big foals on a large changing mat and began the diaper change.

While Derpy was getting Pound and Pumpkin Cake ready for the day, Dr. Whooves was busy trying to change Pinkie Pie. As he had very little experience with children (Dinky had been in the middle of potty training when he’d come unexpectedly into Derpy’s life) it was quite difficult. And Pinkie was no ordinary foal.

Not only did she still have her adult mind, but she was giggling and running around the twins’ old nursery diaperless and shouting. “Weee! Now I know why ta twins wike doing this! It's supew fun!” Meanwhile, Dr Whooves was running around trying to catch her.

The stallion growled. “Seriously, Pinkie Pie, get your rump over here! You need a diaper! I’d rather not be cleaning up puddles all day!”

Pinkie Pie just turned her head and stuck her tongue out. “Yous gotta catch me first, siwwy! Tat's how this game wowks with ta Cake Twins.”

Dr. Whooves took the opportunity to dive head first towards Pinkie, but the filly nimbly jumped out of the way. Dr Whooves squealed as he dove then crashed into a package of adult sized diapers, making the padding fly everywhere. Pinkie Pie was rolling around the ground, laughing. The stallion was quite dazed, unaware of the fact that one of the diapers was now around his waist for some reason.

Pinkie smirked as she quickly trotted over to the stallion and began to tape the diaper around his rump. She then stepped back as Dr Whooves got up. The stallion looked down at the laughing Pinkie Pie and asked. “What are you laughing at, missy?” He then looked around and saw the giant, thick diaper sticking out. The stallion growled as he stomped a hoof and glared at Pinkie Pie. “That's it, young lady! You're in big trouble!” Dr. Whooves waddled at Pinkie, trying to get used to his new padding, while Pinkie was laughing maniacally, leading the stallion down the hall and towards Mr. and Mrs. Cake's bedroom.

As Derpy finished getting the twins dressed in their outfits, the door burst open and they all turned around to see Dr. Whooves waddling, trying to catch Pinkie Pie, who was bursting into laughter.

Derpy smirked as she casually came over and asked. “So, how is our little energetic little pie, dear?”

Dr. Whooves grumbled irritably. “She is quite the mess maker. It took me nearly an hour to change her, and while I was trying to get a fresh diaper around her rump I somehow ended up diapering myself!” He showed off his rump, a big diaper strapped around it which made the Cake Twins burst into laughter.

Derpy giggled as she came over and gave it a pat, making it crinkle. She cooed. “Come on, lay down and I’ll take it off you. I can tell you’re new at this, it’s okay. Every first parent goes through similar struggles. Just be glad you’re not tackling potty training, they call it the terrible twos for a reason.”

Dr. Whooves went over to the pad and laid down with his legs in the air as Derpy went to work taking the diaper off. Afterwards Dr. Whooves smiled and explained. “Well, you should be happy to hear that the baking machine downstairs is completed. I think we’re ready to open the doors. And from now I think I’ll leave care of the foals to you.”

Derpy gave a nod of approval. “Yes it is, but we should talk about some things, honey.”

Dr. Whooves groaned as he got up. “I’m guessing it’s about Pinkie Pie, and keeping her up here and not make everypony freakout. “

Derpy sighed. “Look, I just want to make sure that you have everything you need to keep her under control. If she goes downstairs our whole cover story is blown.”

Dr. Whooves came over with a smile and explained. “Don’t worry, I have an idea to make sure she stays upstairs and is well behaved. Now go on and run this shop, I know you can do it.”

He handed her a remote with various buttons shaped as different pastries. Derpy looked down at it with a confused expression as her husband explained. “It’s very simple, the machine will make whatever you press. Just press it more for quantity. But don't press it too much at a single time, if the machine overloads it can cause major problems.”

Derpy gave a nod and replied. “Well, I think it's easy enough to understand. Just give a shout if you need my help.” She then kissed her husband on the cheek and led the adult sized foals downstairs. She couldn't help but look back, watching the two clumsily waddle about with their diapers shaking back and forth. She cooed. “Oh, you two are just so so adorable! I think I caught Rarity’s mommy fever from when she adopted Blueblood.”

Pound Cake had a small blush grow on his face as he asked. “Tanks, but you sure we should wear diapees? Is gonna make ponies tink we babies still, especially since we no use potty.”

Derpy shook her head and cooed. “Don't worry about that, just remember to tell ponies you have bladder problems. I’ve met some of those unfortunate ones and they’re always ashamed of it, even though nopony judges them for something they can’t control.”

Pumpkin Cake jabbed at her brother. “Yeah! Stop worrying, silly! This gonna be so much fun! We get to do Mommy and Daddy’s jobs!”

Her brother smiled. “Yeah! I gonna have wots of fun being a big pony! Ya watch, sissy, I gonna be more grown up ten ya!”

Pumpkin shouted back. “ Nah uh! I gonna be more grown up!”

Before the fight could escalate, Derpy stepped forward. “Stop that, you two! This isn’t a competition. Now I need to explain some things before we begin, ”Both ponies turned their attentions to Derpy. “Now, I'll go over your roles real fast. Pound Cake, just stand at the doorway and greet guests. Pumpkin, you'll serve guests as the food is made by my husband's machine. Just remember your fake names if anyone asks who you are, and just be nice and cheerful. You two got this?!”

The twins both gave nods and shouted. “You can count on us, Mrs. Derpy!” The two then gave each other glares, before both went about their duties with a determination to prove who was the most grown up.

Derpy soon took her spot at the cash register and was taking orders while she pressed buttons on the remote, and freshly baked pastries were produced through a window that connected to the kitchen. Things seem to be going smoothly as the customers seemed to be enjoying their meals. As more patrons began to go through the doors. Pound Cake nervously bowed frequently amd whimpered. “Good morning, welcome to Sugarcube Corner.”

At one point he squeaked, feeling his diaper hit the side of the door and causing it to poof out. It was a little embarrassing seeing many ponies chuckle or blush as they entered the room diaperless. Then all of a sudden Cheerilee came in as he bowed and repeated his line. “Good morning, welcome to Sugarcube Corner.”

Cheerilee couldn't help but coo. “Oh, that's an adorable look you’ve got!” Pound Cake blushed and looked down in embarrassment as Cheerilee blushed back and whispered. “Oh, I'm sorry, that must’ve been quite rude of me. It's just that you look cute in that diaper. Like one of those forever foals I hear about.”

The sized foal looked up and replied. “Well, is otay. I mean, ya just being nice. But I actually need diapees. My name is um, Cweam Cake, and is nice ta meet ya.”

Cheerilee giggled. “Oh, it's nice to meet you as well, cutie. And I’m sorry, I didn’t know you were incontinent. Most ponies who suffer from it tend to wear stuff so their diaper doesn’t stick out,” Then she observed. “It sounds like pronouncing your words could use some work. I can help you with that if you like. I am a teacher, the only one in town in fact.”

Pound Cake started to bounce up and down, growing a bit excited. “Oh, tat would be fun! I always wanted to learn my ABCs!” Everypony around was quite stunned at what the stallion had just said, and Pound Cake squeaked as he stood up and corrected. “I mean um...I know ABCs and 123s, sowie. Sometimes I forget.”

Cheerilee gave him a pat on the head. “Oh, it’s alright, sweetheart, I’m sure you’ll get it down one day. If you ever need lessons, just ask me.” She then went off to order some breakfast as Pound Cake turned to see his sister snickering at him. He turned away and grumbled irritably, ashamed at his embarrassing slip up.

As her brother continued to greet guests, Pumpkin Cake waddled around clumsily, making her diaper crinkle even more than her brother's. Several ponies also gave her odd looks, but most quickly went back to either eating, or drinking their coffee. She then passed over a pink coated unicorn mare who was drinking a latte. Pumpkin waddled over and gave her a small piece of cheesecake.

The mare then looked up with a smile. “Thank you, sweetie…” She then blushed seeing the cute mare and asked in her accent. “So um...what is your name? I haven't seen you around here, or have I?”

Pumpkin Cake responded. “Well, I from...uh...I tink, Appleloosa.”

The mare laughed. “Oh that must be why you and your brother don't speak well. That's understandable, the town was settled not too long ago and they probably haven’t found a suitable teacher yet. My name is Aloe and I run the spa here in Ponyville with my sister, Lotus.”

Pumpkin Cake gave her a cheerful smile. “Oh really, is tat like a bubble bath?! Do you have rubber duckies and big fluffy towels?!”

This made everypony in the room burst into laughter as Pumpkin blushed, realizing what she’d just said. Aloe looked up and explained in her accent. “Oh no, sweetie. It's more of a hot bath filled with special soaps that help you relax.”

Pumpkin Cake then looked over at her brother, who was now smirking at her. She growled, not wanting her brother to win. She gave Aloe a smile. “Oh, otay tat sounds like fun! But I gots to stay here to work and stuff. Maybe I come by later.”

Aloe waved a hoof. “Okay, sweetie, just don’t work too hard. And we’ll need something special to accommodate your um… ‘protection’.”

Pumpkin Cake quickly waddled off to continue serving.

Suddenly, Pound Cake gasped upon seeing Rarity walk in with her two sons in a two seated stroller, and they all looked up with surprised looks at the big pony in a diaper. The stallion meekly bowed with his diaper crinkling as he whimpered. “G...good morning, Rarity.”

Rarity tried not to giggle as she greeted. “Oh, hello, darling. Who might you be? I don't believe we have met before.”

The stallion whimpered as he responded. “I Cream Cake…um…Cup Cake’s cousin, from Appleloosa.”

Rarity waved a hoof and cooed. “Oh my, I see! Well, it is quite nice to meet you, Cream Cake. Forgive me for mentioning this, darling, but you look a lot like your little cousin Pound Cake if he were all grown up,” Pound blushed as his back legs came close together, scrunching his diaper and making odd crinkling noises. Rarity blushed when she saw it. “Oh my! You even have a …” She paused before she could blurt it out, but she couldn’t believe what she was hearing and stepped back.

Her foals giggled and Blueblood looked up and commented. “He wooks a wot wike my friend, Pound Cake! He even wears diapees wike him!”

Pound Cake looked down at Blueblood and whined. “Nah uh! I Cream Cake, a big pony!”

Blueblood babbled. “Yeah wight! Big ponies dun wear diapees, my mommy says so!”

Pound Cake looked away as he grumbled. “Is not a diapee, you just tink it wooks wike one ‘cause you a baby! Now stop being such a meanie poopy head, I taught you were nicer since turning into a foal!” He walked off, grumbling to himself.

Rarity looked down at Blueblood. “That was quite rude, young colt. You apologize to the grown-up, or there’ll be no sweets for you and no potty time later.”

Blueblood grumbled and apologized. “Sowie Cweamy Cake.”

Many ponies around burst into laughter and coos as Pound Cake waddled back over and grumbled. “Is alright, I hope you have a nice day.”

Rarity then pushed her stroller up to Derpy, who who smiled at her. “Oh, hello Rarity. Here with your little ones, I see. What would you like today?”

Rarity yawned and replied. “Oh, just a nice cup of tea, darling. And two powdered donuts for my foals. They kept me awake last night because Hoity Toity had a nightmare, and Blueblood kept teasing him about it. Honestly, even though he’s a lot better now than he was before he changed, Blueblood is still a hoofful. He still insists on trying to dress and feed himself.”

Derpy wrote the order down. “That’s okay, all little ones are different. Dinky was never too much of a problem for me, but I know many ponies whose foals were real hooffuls,” Then she told Rarity. “I have your order: Tea and two powdered donuts will be right up. Now go on and take a seat, please.”

Rarity gave a small bow. “Thank you, Derpy, darling. And make sure to tell Pinkie Pie I hope she gets better soon. So unfortunate for her to come down with the horsey hives now.”

The three sat down around a small table as Rarity helped her foals into highchairs. Pumpkin Cake soon came over and gave the donuts to the two foals and a tea cup to front of Rarity.

The fashionista smiled upon seeing the mare. “Hello, Pumpkin Cake,” She whispered. “Looks like you and your brother are doing well.”

Pumpkin squeaked in surprise and whispered back. “Yeah. Don’t tell any pony we trying to pass off as big ponies. Is only until Twiwy can find a cure.”

Rarity cooed. “It’s okay, darling, I won’t tell anypony. In fact, Twilight told me to come over and make sure you two are doing okay. She figured that since I’m caring for two victims of the foal pandemic, it would help if I was in the loop so to speak.”

Pumpkin smiled as Hoity chriped. “Yeah. You two have nice clothes, but Mommy and me can make ya better clothes! We wanna make big pony clothes to hide ya diapees! Mommy says they’ll also be good for other big ponies who need diapees.”

Rarity giggled as she ruffled her son's mane, before turning back to Pumpkin Cake. “Oh yes. I would love to make you some cute dresses, Pumpkin. And maybe a nice suit for your brother.”

Pumpkin Cake was now giddy with excitement. “Oh, tat would be super cool! But ya gotta wait until I done helping Derpy, okay?”

Rarity gave a nod. “That's fine with me, darling. Now go on and show what a big pony you are. You musn’t keep the other customers waiting.”

Pumpkin waddled of to serve others their order while chirping. “Oh, I can't wait to wear a pretty dress!”

While things were going rather smoothly downstairs, Dr. Whooves was running around in circles in the nursery, just trying to keep up with the little Pinkie Pie who had made quite a mess of things. She’d done such naughty thinks as spray foal powder all over the place causing the floor to be covered in the powdery substance.

Dr Whooves gasped as he sighed, “You know what, I’m going to pull out my secret weapon on you!”

Pinkie giggled. “Oh weally, what might tat be?”

Dr. Whooves smirked as he took out a remote, pressed a button, slowly regressed into a school foal and replied. “See, I’m now a four year old colt and I’m like your older brother.”

Pinkie Pie squealed as she clapped her hooves and replied. “Yay! Tat’s so cool! Now we can pway wike friends!”

Dr. Whooves rolled his eyes as he took out some puzzles. “Now, I have some puzzles and games we can play! But ya gots to stay here, promise?”

Pinkie bounced over to the colt and began to chant. “Cwoss my heawt and hope to fwy, stick a cupcake in my eye!”

Dr Whooves scratched his mane and replied. “I dun know what tat means, but I'll take tat as a yes.”

Pinkie plopped down on the seat of her diaper as they began to move the pieces around on a gameboard called Rainbows and Pegasi.

The two played for quite some time as Dr. Whooves sighed in relief. Pinkie Pie was now focused on the board game instead of driving him crazy.

Pinkie Pie suddenly smirked as she asked. “So how does your age remote works?”

Dr. Whooves was rolling the dice as he replied. “Oh it’s very simple, it just changes your age for a hour, tat’s all. It won’t work with magic though, as it might have some strange effects.”

Pinkie Pie giggled a she then pulled the remote out of her diaper. “But it only affects those tat I point at with tis? Is that right?!”

Dr. Hooves gasped and shouted. “Hey, how did you get tat?!”

Pinkie just giggled some more as she pointed the remote at Dr. Whooves, and he started to grow smaller. Now his cutie mark was on a thick, white diaper, making Pinkie burst into laughter.

Dr. Whooves blushed as he placed his hooves over his diaper and whined. “Stop tat! Turn me back to a school foal, now!”

Pinkie stuck her tongue out. “Nah uh! You the baby now! Tat means ta Pinkie Promise is void! Mwhahaha!” The little filly then ran off laughing as Dr. Whooves growled. “Hey, get back here! I gonna tell Derpy on you!”

He had trouble wadling as he chased Pinkie out of the nursery and into the hall.

As the day dragged on Pound and Pumpkin did a good job of acting like adults, however their diapers started to sag and smell a little as time went on. Customers started to complain.

Derpy groaned as she came over to the two and whispered. “Hey, let’s go upstairs and get those diapers changed, pronto. You’re gonna chase away all the customers with your stink.”

They both blushed as they gave nods and Derpy led them upstairs. She went into the bedroom and closed the door as both Dr. Whooves and Pinkie Pie ran down the stairs, and they squeaked as they both tripped and fell down onto the ground. They accidently hit the buttons on the remote and Dr Whooves’s coat turned pink as Pinkie Pie’s was now brown.

Everypony looked around as they both blushed, and Rarity’s shadow came over the two foals. The two looked up as she asked. “So, where did you two come from? And why do you look so familiar?”

Meanwhile, an unaware Derpy changed the twins. She gave them both a pat on the head and cooed. “Well done, you two. You cooperated so nicely. I think you both are doing a great job acting like big ponies.”

The two adult foals smiled and they both hugged Derpy, who dawwed and nuzzled them back as she whispered. “Thanks.” She then led them out and down the stairs, and that's when she saw Rarity coming up with four foals on her back, all bouncing amd babbling. The unicorn mare sighed. “Derpy, I need to talk with your for a second. It’s urgent.”

The mare gave a nod, seeing that Pinkie Pie was now brown coated while Dr. Whooves’ coat was now a bright pink color. She and Rarity went back upstairs, entering the destroyed nursery covered in foal powder and adult diapers.

Derpy almost out pulled her mane and shouted. “Seriously, what is going on here?!”

Blueblood went over and talked to Dr. Whooves. They spoke in baby babble for a while before Blueblood turned around and explained. “Well, it seems tat Dr. Whooves has a wegwession wemote, and he used it to pway with Pinkie Pie. But she was naughty and stowe it, ten he chased her. Ta chase ended downstaiws whewe tey both wanded on top of ta wemote, causing the magic to misfire, and it changed the cowor of teir coats.”

Rarity blinked in surprise and whispered. “Oh, wow. And I thought you and Hoity were a hoofful, Blueblood. Especially after you both got flushed.”

“Onwy cause big potty is swippery! I wasn’t scawed of it wike Hoity Toity!” Blueblood humphed.

Derpy, meanwhile, looked down at the remote and asked. “Can we turn my husband back to normal? I can’t manage the store and take care of all the little ones on my own.”

Dr. Whooves squeaked as he jumped up and down in his diaper. Blueblood explained. “He says to be cawefuw with ta magic infused in ta remote, it may make tings wowse.”

Derpy squealed as the remote fell from her hooves and it shot out a laser at both Pinkie Pie and Dr. Whooves! The doctor grew up rapidly into an adult, but his diaper stayed and it now had a animated clock printed on the back, with rain clouds, smiling suns, and smell lines replacing numbers. While Pinkie Pie got her pink coat back but her diaper now exploded with confetti as she waddled about, squealing as the diaper crinkles were replaced with the sound of an accordian.

Dr. Whooves whined. “Seriously! What is going on here?! This shouldn’t have happened even with my remote!”

Rarity sighed. “Darlings, I may not be that versed in magic but I can tell chaos magic when I see it. Those muffins that the Cake Twins and Pinkie Pie ate, I’m betting they were placed there by Discord. And if that’s true, let’s just say Twilight won’t be finding a cure as easy as she expects.”

Chapter Four: A Doctor in Potty Training

Later that day, Pound and Pumpkin Cake were playing with each other while Derpy and Rarity were keeping an eye on the foals. Dr. Whooves was plopped down in front of the board game he had been playing with Pinkie Pie earlier, with his hooves crossed in a pouting motion. It was clear that now that he was diapered, Derpy and Rarity both were treating him like one of the foals despite his size. He turned to see the board game now had both Blueblood and Hoity Toity playing with Pinkie Pie, all taking their turns. At least they were cooperating.

After finishing her turn Pinkie Pie looked around and asked. “Hey Whoovesy, wha time is it?”

Dr. Whooves grumbled. “I don’t know, but I think it’s nap time for you, little one.”

Pinkie burst into laughter. “Nuh uh! Is way too early for nappy time!” She bounced over as her diaper made random noises and she asked. “So now ya a big pony in diapees! Why don't ya just use your age remote and change yasewf into a baby?! We can have so much fun!”

Blueblood shouted in delight. “Yeah! We need more big ponies to turn into foaws! The foaw pandemic shaww wize again!”

Hoity snickered. “He’s awmost one! I mean, he wost his potty training and his diapee tewws when he needs a change! What a coow diapee, I wish I had one wike tat!”

Dr. Whooves rolled his eyes and explained. “I told you before, my remote doesn’t work like that. It’ll only change my age for an hour. If I keep changing myself back and forth I’m gonna burn out the remote, and we’ll all be in trouble.”

Pinkie smirked. “Weww, now we have chaos magic fwowing through us I’m betting tat it can go wonger! Pwease?! Come on, I pwomise I’ww stay hewe in ta nuwsewy tis time!”

Blueblood and Hoity both shouted together. “Pwetty please?!”

Dr. Whooves scoffed and turned to Pinkie as he grumbled. “Yeah right! After what you pulled earlier, I don’t trust you one bit. I’m not falling for it again.”

Pinkie Pie, undeterred, looked up with puppy dog eyes as she pleaded. “Pwetty pwease? I pwomise I won’t weave ta nuwsewy! I mean it.”

Derpy came over and cooed. “Sounds like you’re all having fun. I could hear your babbing all the way across from the nursery.”

Dr Whooves got up and explained. “They want me to turn into a foal, just because I’m in a diaper.”

Derpy giggled as she came around and checked the stallion’s diaper clock. “Well, it looks like you’re going to be peeing soon anyway. So I think this is a perfect opportunity to show the Cake Twins how to use the big potty. If it’s really chaos magic, we should probably at least partially train them so they don’t go through all their diapers before Twilight can cure them or Mr. and Mrs. Cake come back.”

All the foals around giggled and turned their attention to Dr. Whooves who squeaked at such a notion, making his back legs crunch his diaper as he shouted. “No way! I didn’t sign up for that! I’m a scientist, I don’t do potty training! I barely even did it when Dinky was going through it.”

But Rarity came over and cooed. “I for one think that would be an excellent idea. We should have every foal watch the doctor go potty! Give them an example and a chance to see a grown up on their level.”

Dr. Whooves whimpered in protest as Derpy nevertheless took him by the hoof and led him across the hall to the bathroom. All the foals followed behind, waddling about and making a symphony of crinkling that echoed through the hall.

They eventually reached the bathroom and came upon the toilet. Pound and Pumpkin Cake finally laid their eyes upon the porcelain bowl. Despite them now being the same size as it they still whimpered and their legs shook. “M-monster!” They whimpered in fright, opting to stand as far back as they could from the toilet, as Pinkie Pie sighed and groaned.

Hoity Toity hid behind the twins as well, which Blueblood rolled his eyes at. “I thought you not scawed of big potty anymowe?” He asked Hoity Toity.

“I thought I was, bu ten I got fwushed!” Hoity gulped.

“So, I did too, I wasn’t scawed,” Blueblood humphed. “As wong as you cawefuw, ya wun go down ta howe! Now watch, when Dr. Whooves uses it ya see it not scawy ow a monstew!”

Dr. Whooves. Meanwhile, just whimpered some more as Derpy cooed. “Alright now Pound and Pumpkin Cake. Dr. Whooves here is going to show you that the big pony potty is not a monster. Just do what he does and you’ll be fine.”

The stallion grumbled irritably and started to do a potty dance as the hand on the back of the diaper moved to the storm cloud, indicating he was about to wet himself.

“Okay, it’s really simple. You just need to take your diaper off,” Derpy began to instruct, then slowly peeled the tapes off Dr. Whooves diaper as he waddled onto the toilet and sat down. “You sit down on the seat like Dr. Whooves does. Then you just do what you’d normally do in your diaper.”

Dr. Whooves sighed and relaxed, peeing into the toilet. Once done he got up. “It’s a good idea to use toilet paper to wipe yourself up, especially if you’re still in diapers,” He instructed as he gestured to the nearby roll. “Take only one swath of the roll off at a time, don’t try to use the whole thing.”

“And when you’re all done, you just flush. Like this,” Derpy explained as she pressed down the handle. “There, it's that simple. Nothing to it. Oh, and be sure to wash your hooves afterward.”

Pinkie Pie chirped up as she turned to the twins. “See, you guys?! Is not tat scawy! Ta potty just wans to be youw fwiend! And you wike making new fwiends, wight?”

Pound Cake reluctantly asked. “Can we at weast have diapees wike Dr. Whooves when we twain? They wook pwetty.”

Derpy giggled, picking up the diaper. “Sure. I’ll have my husband wear a few more and have you wear them as needed. It'll make it easier to see when you need to go. If you’re still nervous, that’s okay. Just come get me, I’ll be there to help. And I promise you, I won’t let the potty hurt or eat you.”

The twins both squealed at the notion as the stallion grumbled, seeing another diaper be tapped around his rump, and another clock magically appeared on the seat of it. “Just wonderful, how can this possibly get any worse? Given the choice, I’d rather be fighting the daleks.”

After a humiliating experience of wearing dozens of adult diapers and making stacks of the enchanted ones with the clocks printed on the backs, Dr. Whooves was now sitting down and eating dinner with his wife, the Cake Twins, and Rarity with her foals in highchairs (Pinkie Pie had been fed earlier).

Dr. Whooves asked. “So, Rarity, I was thinking about what you said earlier, about this being tied to Discord. Did you send this hypothesis to Twilight?”

Rarity gave a nod. “Yes, darling. In fact, she told me after hours of studying that she has concluded the same thing, that this is tied to chaos magic. It could take weeks to figure out a solution, chaos magic is very complicated.”

Derpy then asked. “So, does that mean you and your friends are going to have to wake up Discord to get him to fix this? Do you even know if he’ll cooperate? What if he intentionally left the muffins out to turn Pinkie into a foal, so she can’t use her Element of Harmony?”

Rarity shrugged. “I’m not sure, with Discord all bets are off. Pinkie still seems to have her adult mind though, so as long as she doesn’t try to stuff the Element of Laughter into her diaper or flush it down the toilet we should be okay. Twilight and Celestia will be going over on what they want to do to solve this. For now, we’re going to have just keep watching the twins and Pinkie Pie. We’ll probably have to tell Mr. and Mrs. Cake what happened if they come back.”

Pinkie giggled as she kicked about in her diaper excitedly, and in foal babble she shouted. “Yay! Tat means I going to be a foaw wongew! I get anothew foawhood!”

Blueblood giggled and spoke in baby babble. “Weww, we wewcome ya, newest baby! Guess ya joined the diapee club, just fow a wiwwle bit anyways.”

Hoity laughed as he bounced in his diaper, making it crinkle. “Yeah, ta diapee club! Guess we needed another fiwwy. So faw, Zecowa is ta onwy fiwwy who is a baby. Can’t bewieve she not in potty twaining yet. I tink Appwejackie’s owevpwotective of hew.”

Pinkie laughed. “Yeah, we need mowe big ponies to join! Tat’s why I want to have Whoovesy be a baby.”

Blueblood commented “So, Derpy has ta age wegwession wemote. We can twy convincing hew to tuwn him into a baby fow a wittwe bit…” He then laughed as he rubbed his hooves together. ”Oh, I gots an idea!” He then switched to talking to Derpy. “Hey, Dewpy. Hoity and I wewe wondewing if ya can change Whoovesy into a toddwew for a bit.”

Dr. Whooves spat out his food and Derpy smiled and asked. “Oh, what for?”

Hoity replied with a smile. “Weww, he did such a gweat job showing Pound and Pumpkin Cake ta big potty. Bu we foals stiww and wan to see him on the wittwe pwastic potty.”

Dr. Whooves whined. “No way! That was the first and only time I’m ever being a potty training pony! I told you, I don’t do potty training!”

Derpy just cooed. “Oh,I think that’s a great idea, just for a little whle. I can even tuck you in when you go to sleep tonight, just like I used to do with Dinky.”

Dr. Whooves scrunched the diaper between his legs. “No…no way! There’s absolutely no way I’m going to just let you do that!” He then tried to run off, but was hit with a zap from the remote as he regressed into a three year old toddler, with his diaper shrinking down with him.

Rarity caught him in her magic and cooed. “Oh, just look at the little Dr. Whooves, he’s just so adorable as a baby!”

The little colt kicked about, making his diaper crinkle as he whined. “Stop tat! I wun be tweated wike tis! Get off me!”

Rarity placed Dr. Whooves down as he crossed his hooves. “Fine ten! I guess I’ww demonstwate how to go potty fow ta othew foaws. Bu onwy tis once, so tey’d bettew wisten.”

Derpy placed a plastic potty down as Dr. Whooves went over and explained to the regressed foals. “Now tis is a potty! Now watch, when ya get the urge wike I do, ya go to the potty. See, my diapee is showing ta stinky wines, tat means I need to go poopie. So ya just sit down and do it. A gwown-up cweans up ta potty.”

He sat down and did his business as Derpy clapped her hooves. “Oh, what a big colt!” She then picked him up and cleaned him with wipes. “There, all done. Now that we have a good idea on how to use the little potty, would anypony else like to try?”

Both Hoity Toity and Blueblood raised a hoof. Rarity (having thought ahead) set out two plastic potties. They came over and both plopped down and peed into them. Rarity smiled. “Oh, look at them, growing up so fast. I bet they’ll be out of diapers in a year or so.”

Derpy gave a nod. “I wonder when my husband will be out of diapers? Dinky was a pretty fast learner, but I wonder if he’ll be the same.”

The mares giggled as Dr. Whooves crossed his hooves and pouted. “Whateva, can I just go to sweepies? I had a wong day.”

Both mares gave nods as derpy took him by the hoof. “Come on, cutie. You can sleep with me tonight. Rarity, you can take care of the potties. And tell the Cake Twins they don’t have to worry about trying to use the potty at night.”

“Right, darling, better not risk them causing any accidents.” Rarity replied before she used her magic to pick up the training potties.

Dr. Whooves just blushed as he toddled along, with his diaper shaking back and forth.

Later, after Derpy placed a nighttime diaper on Pinkie, Blueblood and Hoity, she was placing the nighttime diaper on Dr. Whooves, and gasped upon seeing that a small clock appeared with various times and a storm cloud next to them. She giggled. “Looks like a schedule on when you’re going to pee tonight. That’ll be helpful.”

Dr. Whooves squeaked and shouted. “Sewiously?! Ugh!”

Derpy just cooed. “This chaos magic sure is something. Now come on, let's get going. We’ll see if my hunch is correct.”

They went into Pinkie Pie's room where Rarity now had her own bed in place. The fashionista smiled. “Well, it looks like I'll be staying here for awhile, so I might as well make myself comfortable.”

Derpy lightly rolled her eyes, took the little colt to Pinkie’s bed and lay down with him, snuggling close. Derpy blushed, having fond memories of sleeping like this many times with her daughter. She then slowly drifted into a deep sleep.

The next morning, after everypony woke up, Dr. Whooves groaned as he got up and saw that he was somehow still a toddler, and was having his very soggy diaper changed by Derpy. He then asked. “Um, Dewpy …why am I stiwww a toddwew?”

Derpy shrugged. “I'm not sure. I thought you would’ve turned back into a stallion by now,” She then looked down to see that her husband’s new diaper now had Dr. Whooves’ cutie mark, but the hourglass sands were dripping down. “Huh, that’s odd. I wonder why it's doing that?”

Dr. Whooves looked down at his diaper and shrugged. “I not suwe…just use ta remote to tuwn me back to thiwty.”

Derpy blushed. “Right,” She took out the remote, but when she tried to change him back to normal, nothing happened. “Huh, that’s very odd.”

Dr. Whooves cried in protest. “No, no, no! I can’t stay a toddwew!” He then blinked, looked down at the diaper and gasped. “Ta timew! Tat must be wha it means, I’ww be a toddwer untiw aww ta sand is gone.”

Derpy giggled. “Well then, I guess I won’t waste the opportunity to baby you,” She then placed a pacifier in his mouth, and drifted a cute suited onesie over him. “There. You’re all suited up, my hubby.”

Dr. Whooves rolled his eyes and waddled off towards the door, only to be tackled by Blueblood and Hoity, both laughing. “Yay! Anothew pony has become a pawt of ta diapee cwub.”

Dr. Whooves scoffed. “Not fow wong! My diapee has a timer, see?! Tat means I onwy a toddwew fow a wittwe bit.”

Blueblood snickered. “Weww, I guess ya membership has a wimit. Oh well, tats otay.”

Pinkie Pie bounced over, showering the foals with confetti! “Anothew foaw! We gots another foaw, yay!”

Rarity came over. “Come now, darlings. Today, I’ll be caring for you while Derpy and the Cake Twins work. No funny business now.”

They all squealed in delight as she hoofed out bottles, and gave one to Dr. Whooves who blushed as he started to drink. His eyes lit up as he continued to chug, as the other foals giggled.

Blue Blood then cooed. “Wooks wike ya wike mommy’s miwk a wot!”

Dr. Whooves spat it out as the foals squealed in laughter. Derpy dawwed. “Oh, that was just too adorable!”

He groaned as Rarity picked him up by the diaper to examine the clock on his back. “Well, it looks like he’ll be peeing in an hour or so. I would love to tape up a hundred or so diapers to get that enchanted clock on my stuff as well. It’ll help a lot with potty training Hoity and Blueblood. No more false alarms, and no more stinky accidents.”

Dr. Whooves groaned as he was then lifted to a diaper changing mat, and Rarity began tapping and untapping diapers from around his rump.

The two adult foals were now back to serving ponies as they both took turns looking at each other’s diapers. That way they could keep each other informed of their need to go potty.

As Pound Cake was opening the door to what he assume would be a normal customer, he gasped upon seeing Twilight come in, and quickly bowed. “G-good mowning, Twiwy.”

The mare gave the big foal a pat on the head and cooed. “It’s nice to see you as well, Pound Cake. And how are things with you and your sister? How do you like being a big pony?”

Pound Cake shrugged. “Well, is okay. Is weird bu fun I guess,” Then he smiled. “Dr. Whooves is teaching us how to go potty, and is not tat bad.”

Twilight gave a nod. “That’s good to hear.”

Pound nodded and continued. “Yeah! He has a power whewe evewy time he weaws a diapee, a cwock appeaws on tem.”

Twilight burst into laughter, and when she controlled herself she came over and asked. “Oh, I need to see this! Can you show me, please?”

Pound Cake turned around, and Twilight burst into even more fits of laughter upon seeing the adorable clock on his padded rump. It was super adorable and it made her squeal. “Oh, that is just adorable! And useful!”

Pound nodded and explained. “Yeah, it is! My sistew came up with a plan were we wook at each others diapee to figure out if we need to go potty thwoughout the day. Guess what?! We haven’t have a singwe accident!” He didn’t mention that they were secretly only using training potties. They still didn’t fully trust the big potty just yet.

Twilight cooed. “That’s very good to hear. Now, I need to talk to Rarity about something very important, okay?”

Pound nodded. “Otay, Twily.” She then continued on her way and waved a hoof at Pumpkin who waved back, then waddled off.

Derpy smiled as she approached Twilight. “So, from what I heard, you agree with Rarity that the muffins were infused with Discord’s magic, right?”

Twilight gave a nod. “Right. But from what I read, chaos magic eventually dissipates, so you have nothing to worry about. Pinkie Pie and the Cake Twins will be back to normal soon. You actually didn’t need to potty train them, though I think Mr. and Mrs. Cake will be glad you did.”

They then went up stairs only to see a naked Dr. Whooves shouting “Give my diapee back!”, as Pinkie Pie was giggling, running around with his enchanted diaper on her head, and Blueblood and Hoity were both laughing while Rarity was somehow in the crib, strapped in a big diaper that was crinkling between her back hooves. It was a miracle the crib hadn’t broken.

Rarity gave a sigh of relief. “Oh, thanks goodness you’re here! I thought I could handle the little ones on my own, should’ve known four foals were harder than two! Especially when one of them is Pinkie Pie.”

Twilight sighed as she lit her horn and untied Rarity, she then went over to Pinkie Pie, picked up the diaper, and strapped it around Dr. Whooves’ waist. It was then that she saw the enchanted clock and the odd hourglass counting down on the front of the diaper. She smirked. “So I assume you'll be back to normal when the hourglass stops?”

Dr. Whooves sighed. “Yeah. Now do ya have a cuwe or someting?”

Twilight cooed. “I just explained to your wife that the chaos magic infused within the muffins will dissipate soon. And as for you… I do believe that hourglass is proof Discord’s chaos magic can’t last forever. Luckily, I stored the rest of the muffins safely in my library where nopony can find them.”

They all cheered as Twilight sighed. “Now, I would actually like to stay and document, as this may be a scientific discovery into how foals think and act.”

Depry blushed. “Um, I'm not sure if that's a good idea…we’re running out of room here. And if everypony’s staying at Sugarcube Corner it’s going to look mighty suspicious.”

Twilight waved a hoof. “Oh, don’t worry, I’ll camp out downstairs. I’ll try to be discrete. Besides, Spike can manage the library all by himself, and I can always teleport over there if I need something.” She then turned to Pinkie Pie, who squealed as she bounced over, shooting out confetti from her diaper.

Twilight dawwed as she picked her regressed friend up. “Oh, just look at you, Pinkie Pie! You’re just so cute! Also, it looks like you need diaper change, come on.”

Depry laughed. “Well, I'll go back downstairs and continue running the shop with the twins. Have fun.”

“We will!” Twilight insisted.

As Pinkie Pie’s diaper was changed she thought to herself. “It’s too bad I’m probably only going to be a foal for as long as it takes for the sand on Dr. Whooves’ cutie mark to run down. Maybe there are some more of the magic muffins I could eat to turn back into a foal again? Mr. and Mrs. Cake probably wouldn’t mind, I’m already family to them and it’d be fun to grow up with them, even if was just for a little while.”

Chapter Five: Foal Explosion

Although she still hoped to find a cure for the magic muffins Discord had left behind, Twilight joined Rarity and Derpy in watching the huge group of foals. Things were going smoothly, it had already been two days. Pound and Pumpkin Cake as well Pinkie Pie, were looking over Dr. Whooves as he teaching Blueblood about shapes and colors. He showed them a circle block. "See? Tis is a circwe, it has no sides and is wound."

The two ponies oohed as he continued, picking up a triangle. "Tis is a twiangwe. It has thwee sides, see?" He then started placing the shapes in the holes as the foals looked up in wonder.

Hoity Toity opened his mouth and shouted. "Wow! I fowgot my shapes Is so cool to we-wearn. So, wha is a squawe again?"

Dr. Whooves picked up the square block. "Tis is a square, it has fouw sides. A wectangwe is a squawe tat is wider tan it is taww."

The colts oohed as Pinkie Pie rolled her eyes. "Ugh, tis is so bowing! We onwy babies, we dun need pweschoow stuff yet. I know my shapes and cowows."

Dr. Whooves turned around with a pout and plopped on his diaper making it crinkle as he babbled. "Ya dun need to weawn this stuff since ya gonna be a aduwt again soon.”

Pinkie rolled her eyes and pouted, she then turned to see Rarity was in the back of the nursery watching the foals with intense scrutiny. She then scoffed. "You know wha? I tink tat it wouwd be gweat if we did someting fun befowe Dw. Whooves and I tuwn back into big ponies again."

The foals giggled as Blueblood looked over and replied. "Yeah, tis is gonna be so coow! Gwad ya tinking wike us! So what awe ya tinkin?"

Pinkie smirked as she replied. "Weww, I bet tat thewe awe some sweets we can get into in ta kitchen."

Dr. Whooves waddled over. "Ya tink, I just gonna wet ya go on a cookie heist? Not in a miwwion yeaws!"

Pinkie Pie bounced in her diaper, poofing confetti out of her leg holes as she shouted. "Oh come on, Whoovesy! It'ww be so much fun!"

Hoity waddled over in his thick, crinkling diaper. "Yeah, it sounds wike wots of fun! But we needs to sneak by Wawity, ten Dewpy and ta Cake Twins downstaiws. And we can’t fowget Twiwight."

Dr. Whooves crossed his hooves and grumbled. "I dun know…"

All the foals pleaded together. "Pwetty pwease?!"

Dr. Whooves looked over the foals giving him puppy eyes and blushed as he scrunched his diaper and relented. "Fine, I helw ya out, but we need to distract Wawity fiwst."

Blueblood snickered as he eyed Rarity. "I gots an idea to distwact hew, ya better save me some sweets! I going in!" Then he waddled over towards his mom. He waddled along, shaking his padded rump adorably as he tugged on Rarity's tail and giggled.

She turned around and dawwed. "Aww, Blueblood, what are you and your friends up to? You were talking for a while back there. Are you planning to get into trouble again, mister?"

Blueblood snickered as he plopped onto his belly, rolled his legs up and cooed. "Nu-uh, is noting, Mama. I just wanna say I wuv you!"

Rarity dawwed as she bent down and nuzzled Blueblood, booping him on the nose. "Oh stop trying that. You always want something. What is it? If it’s the big pony potty, the answer is still no. I don’t trust you not to fall in."

Blueblood curled up, scrunched his diaper even more, and told Rarity. "Well…I just wanna pway with ya. Ya give me a tummy bwow, ya awways good at tose."

Rarity couldn't help but nuzzle her son as she gave him raspberries into his belly, making Blueblood squeal in laughter and squirm about. She had no idea that this was exactly what Blueblood had planned.

The other foals slowly walked down the stairs while Rarity was busy playing with Blueblood, and saw Pound Cake and Pumpkin Cake. They were giving food to the many ponies sitting at the tables (and waddling about in their diapers, they weren’t quite at the level where they could be undiapered. Plus it would ruin their cover) while Derpy was standing behind the counter.

Derpy was smiling as she was giving cupcakes and other pastries to the ponies who ordered them. The foals all gulped as they looked over the room, trying to figure out how they were going to get into the kitchen. Especially since there was still no sign of Twilight.

Hoity came over and whispered. "I'ww distwact Dewpy whiwe ya guys go into ta back woom. Save me some sweets."

Then Hoity waddled over, and Derpy looked down with a smile. She then nuzzled the little colt and cooed. "Oh, hello. Hoity Toity! What are you doing down here, little one? I thought your momma was upstairs."

Hoity smirked as he babbled. "I just hungwy, can I get someting ta eat?"

Derpy looked over and gave the colt a pat on the head. "Certainly, cutie! Come on, let's get you some foal food in your tummy." She took the little colt by the hoof and led him away as the other foals snuck into the kitchen.

They looked up at the giant robot that was busy making pastries. Miraculously, it was still operating just fine despite its creator being too small to repair it.

Pinkie then took out a tray of muffins that were just lying nearby. Dr. Whooves eyed them and asked. "Hey, whewe did tose come fwom? I dun think my machine made tose."

Pinkie shrugged and looked over them. "I bet they pwobabwy otay. I mean, tey just muffins."

Dr. Whooves was unsure about the whole situation and shook his head. "Didn't muffins tuwn ya into a foaw? We should pwobabwy give those to Twiwy to be safe."

Pinkie smirked as she then took a piece of one of the muffins. She had a rather naughty idea. "Weww, wooks wike I gots to test it and see if tey do got chaos magic in tem. And if I can’t eat tem, I know whewe I can put tem!" She eyed the baking machine.

Dr. Whooves tried to stop Pinkie, but was too late as she threw it into the machine! Dr. Whooves gasped as the muffins were absorbed into the cylinder machine, and it then slowly became a pink pastel in color as a frilly white apron formed around its base. More mechanical arms came out as it scanned Dr. Whooves. "Identified: Three-year-old colt, hasn't eaten in three hours. Proposal: Some foal food should be eaten." It spoke in a voice that sounded feminine (almost like a nanny, you might say).

The little colt didn't wait for the machine to make up its mind and began to scamper off! But he didn't get far as the arms took hold of the squirming Dr. Whooves, making his diaper crinkle and he squealed as a bit of pee leaked into his diaper from all the excitement. The machine didn’t seem to notice the small damp patch that was forming, as it placed the embarrassed Dr. Whooves in a highchair and revealed a jar of foal food. It started to feel him glops of the orange mush, which was a mix of mashed carrots and yams. And he could hear Pinkie Pie laughing. "Stop it!” He protested. “Pinkie, ya gonna be in big twoubwe fow tis! Ya gonna gets a spankie fow suwe!"

The little filly just laughed as she waddled off outside, meanwhile the machine continued feeding Dr. Whooves. Unknown to either of them, it then started to produce more pastries at the same time with a mix of the magic-infused muffins.

Pinkie Pie was now outside and smirked upon seeing Derpy. "She couldn't resist a muffin even if it has chaos magic!" She thought to herself. “It’ll only be for a little longer than Dr. Whooves and I are foals. Twilight can change her back to normal when she finds that cure she’s gotta be close to finding.”

The mischievous filly quickly scampered over and placed one of the magical muffins near Derpy. Pinkie then spotted Twilight wearing a safari outfit with binoculars as she documented Pound and Pumpkin Cake doing their duties. No doubt it was for research (probably on how big foals behaved). Pinkie crept over and placed a magic muffin near Twilight then she quickly climbed upstairs, laughing. "Oh, tis is gonna be fun! Maybe I can do tis aftwe evewyting’s back to nomaw so the twins have mowe pwaymates."

Derpy looked over at the odd muffin, and her stomach grumbled as she picked it up and began chewing on it. She suddenly started to shrink slowly as her body became chubbier. She squealed upon seeing the floor was now closer and gulped. “Uh oh! Tat was a chaos muffin! Is not good!" The little baby Derpy was a bit unnerved, unsure of what to do, when she saw Twilight about to eat her muffin. The little filly gasped as she tried to waddle towards Twilight and cried. "Stop! Dun eat ta muffin!"

However, Twilight just heard foal babble and casually took a nibble of the muffin as she looked over to see the odd looking pegasus filly. "Huh, a baby pegasus? Where did she come from? I didn't see one enter the shop. But she looks familiar..." She then groaned as she started to shrink, but she noticed she was still taller than the pegasus and asked in a childlike voice. "Wait, what happened?! My voice!" she touched her throat and gasped! "I...I sound like a school filly!” Then she looked around and gasped! "My cutie mark, it’s gone! Where's my cutie mark?!"

Twilight then saw a school bag somehow magically appeared on her back with her cutie mark now printed on it. "Huh, that's weird. Some of the magic muffins are clearly still around!" A look of horror crossed her eyes. “Oh no, Rarity! Got to warn her before it’s too late!”

Twilight scampered up the stairs with Derpy on her back, as she entered to the nursery where Rarity was now a school filly as well, with a school bag with her cutie mark printed on it too, chasing Pinkie Pie. "You get back here! I may be a school filly, but I'm still older than you! I don’t wear diapers, thank Celestia for that!"

Twilight stomped a hoof! "Rarity, what happened?! You were supposed to watch the foals!"

Rarity turned towards her friend and cried. "I was! But Pinkie pie and Dr. Whooves both just escaped! I didn't know they were using magic muffins to regress ponies. Heck, I didn’t know the magic muffins were still around."

Twilight stomped over. "You weren't paying attention! How could you let them outsmart you when you’ve been raising two foals all on your own?! Now look at us, we're no older than the Cutie Mark Crusaders! Heck, we sound just like them!"

Rarity scoffed. "There's no way I'm going into some rundown tree house and getting icky tree sap all over my coat. Honestly, I don’t know what those girls get up to half the time, but it’s making me worry. I was never that adventurous as a blank flank."

Twilight rubbed a hoof down her face. "That's not what I meant, Rarity! We sound and look like them, but we're not them. Like with the foals and the twins, we still have our normal minds. In any case, we need to close the shop and find any trace of the magic muffins before more ponies turn into foals! We were lucky, there must not have been enough magic in our muffins to fully regress us. But the next batch could turn anypony who eats the muffins into a foal like Pinkie Pie!"

Then they all heard crying, wailing and giggling downstairs. They scampered down to see that every single patron in the shop was now either a baby foal or a school foal. Pound Cake had luckily already flipped the sign from “Open” to “Closed” and Pumpkin Cake was gathering up the foals up, trying to quiet them.

Twilight and Rarity entered the kitchen and found the baking machine rocking Derpy Hooves with a bottle of milk in its mouth. The machine turned its attention to the fillies and scanned them as it replied in its nanny like voice. "Two eight-year-old fillies detected, it's about four in the afternoon. Proposal: Snack Time." Mechanical arms popped up out of its body and the fillies ran straight for the machine as Rarity shouted. "Doctor, how do you shut this infernal thing off?!"

Dr. Whooves whined through the bottle he was drinking. "Pwess the wed button!" Twilight scampered over and slammed herself into the button, shutting the machine down as it powered off. The fillies looked around and helped Dr. Whooves up as he shouted. "Whewe is Pinkie Pie?! She’s in so much twoubwe! I can’t beweieve she’d do tis!"

Twilight sighed. "Look, we can worry about that later. I’m sure Pinkie Pie didn’t mean for things to get this out of control. For right now, let's get all the foals accounted for and find out who they are, as well as what we’re going to do with them."

The group nodded as they went into the leading parlor of Sugarcube Corner to help the Cake Twins.

A short time later, all the foals were in the middle of the Cake Twins’ nursery, running about and playing. Twilight accounted for all of them and concluded that they had eight little baby colts, including Caramel who was wearing a thick diaper and sucking on a bottle of milk. For the baby fillies: Nurse Redheart was now one of them. For the younger school foals, six were colts with one being recognized as Filthy Rich, now playing with a toy cash register. While among the school fillies, Twilight recognized one as Cheerilee, playing school with a bunch of dolls.

Twilight and Rarity could only look with worry and turned to see that Pound and Pumpkin cake as of now were the only actual adults in the room, and they were just foals in adult bodies!

Rarity could only whisper. “What do we do, Twilight?!"

Twilight whispered. "I have no idea, but Pound Cake, Pumpkin Cake, you two look the most grown up. I’m afraid we don't have a choice at this point. We're going to have to free Discord and get him to transform these ponies back into adults, but until then you two are in charge."

The twins both gave each other nervous looks as Pound asked. “H...how wong untiw ten?"

Twilight sighed. "Not long, hopefully. But we need to act fast, we can't wait any longer! If we don't do something soon, Sugarcube Corner is going to become Sugarcube Daycare."

Pumpkin Cake turned to Twilight and chirped. "Dun wowwy, Twiwwy, we'ww take cawe of tings hewe. At weast now we dun have any othew big pony tings to wowwy about, we just gots to take cawe of the gwown-ups wike tey us. Is wike we pwaying house."

Twilight then scampered off as Cheerilee asked. "Um, I have a question. Since I'm a school filly, right now school is starting. Who's gonna run my classes?"

Nurse Redheart looked up and babbled, "I gots appointments for wots of big ponies. Who gonna covew fow me?" She then showed off a teddy with a bandaid on its belly.

Filthy Rich looked up from his toy cash register and commented. Uh, also, nopony is runnin’ my store. I can’t exactly ask Spoiled or Diamond to do it for me when I’m like this, they’ll never take me seriously."

Pound Cake came over and explained. “Weww, fow now, ya wittle foaws. not sure if is ta best option to have you do big pony jobs as you awe now."

Cheerilee blushed, looking at herself in the mirror. “Yeah, I guess the students won't take me seriously like this. They’d probably treat me like those flour sack dummies for the foalcare assignment."

Pumpkin Cake then came over. "Wook, I suwe tings wiww be fine eventuawwy. Just pway fow now, and if you need anyting wet us know. We’ww twy to pwovide it." The foals nodded and ran off, playing their games.

Meanwhile, Pinkie Pie was in what used to be the twins’ crib with a magic bubble surrounding her. She shouted. "Hey, wha about me?!"

Pound growled. "Ya in timeout until Twiwight comes back. Even as foaws, we nevew did anyting this naughty! You wucky Mommy and Daddy not hewe to see tis."

Pinkie looked down and whimpered. "I sowie I thought it wouwd be more fun with more foaws. I didn’t mean to wegess evewypony."

Pumpkin just sighed. "Wook, it'ww only be a few more houws. Ten tis aww goes back to being nowmaw."

Pinkie just sighed. “Alwight, guess I did go ovewboawd….I hope I didn't mess things up too bad. I just wanted mowe pwaymates,” Then she noticed the twins checking each others diapers. She realized they still had the special potty clock ones that Dr. Whooves had given them two days earlier. But come to think of it, she hadn’t seen them go into the bathrooms downstairs. They’d always gone upstairs, despite the fact that it took longer to do so. She could only think of one reason why they would do that. “Hey, you two stiww not using ta big potty, awe you?”

Pound and Pumpkin reluctantly nodded in confession. “Even when Miss. Dewpy was awound, we not feew safe using it,” Pound explained. “If Hoity Toity and Bwuebwood could get fwushed, how do we know tat not happen to us?”

Pinkie groaned, putting a hoof to her face. “Sewiouswy? You stiww wowwied about tat? I towd ya it not scawy, it just wan to be ya fwiend!” Then she got an idea. “If you two wets out of this bubbwe, I pwomice I’ww behave. And I’ww show tat the big pony potty is totawwy safe and wun huwt ya. Ten you two gots to stawt using it so the twaining potties can be used fow actuaw wittwe ponies. Otay?”

“Otay, big sistew. But ya pwomiced, so no going back on ya wowd.” Pumpkin declared as she lit up her horn. She struggled to make it spark and undo the magic bubble.

Pinkie just grinned, stepping out of the bubble and popping it with her hooves. “I couwd’ve gotten out at any time. But if I did it whiwe Twiwght was hewe, she’d put me back in it and punish me mowe,” Then she told the twins. “Now come on, ya know whewe the big potty is.”

chapter six: Babies and School Foals, Oh my!

Pinkie Pie was preparing to lead Pound Cake and Pumpkin Cake, but they stopped in their tracks and looked at her. “We dun actuawwy have to go yet. Our diapee cwocks say we not gonna go fow at weast anothew hawf houw. We just checked to make suwe we no have accidents.”

Pinkie humphed. “Fine, bu ya not getting out of using ta toiwet. I gonna be watching ya two.”

“And we gonna be watching you, big sistew.” Pound warned, as he and Pumpkin both proceeded to look at the dozens of foals, unsure of what to do.

Rarity turned around and explained. “Look, we clearly can’t do this by ourselves and it could be awhile before we get help.”

Pumpkin Cake asked. “So who can hewp us? We can't take cawe of aww tese foaws by oursewves. Especiawwy not when Pinkie Pie’s one of tem.”

Rarity pondered for a little bit, then suddenly chirped. “Applejack can help! She’s a mommy, so she knows lots about foals! Plus, she helped raise Apple Bloom! And she helped deal with a whole bunch of regressed foals in Manehattan. She’ll know what to do!”

Pound and Pumpkin both looked at each other with worried looks on their faces. Pound replied. “Weww, otay, bu how do we take cawe of aww tese foaws whiwe ya gone? We taught it be easy.”

Rarity smiled and chirped. “And it will be if you just split them in half. Pound Cake, you take care of the colts, and Pumpkin Cake, you take care of the fillies. Just watch them and change their diapers when needed. I’ll be back soon. Make sure to keep them out of trouble.” The little school filly then ran off out of the nursery. All the while the two foals turned adults just gulped as they looked among the foals running around the room.

Pumpkin Cake turned towards Pound Cake. “So if we spwit the wowk between us, I’ww take ta weft hawf of ta nuwsewy and care for the fiwwies. You can take the wight side and cawe fow ta cowts.”

Pound Cake clapped his hooves. “Yeah, tat sounds wike a good idea! And tis way we have an excuse when ouw next potty time comes awound.”

The twins then went about gathering the foals, going to each side to care for their designated foals. Soon, the nursery was clearly split. On the right half, Pound Cake was completely beat as he was buried under a mountain of diapers and foal bottles scattered all over the place, and there was dozens of colts running around, hitting each other with foam swords.

Pound Cake had five colts on his back, with a screaming baby Caramel in a dirty diaper, squealing on the changing table as the stallion was trying to change him. “Stop whining and wowwing awound!” He then turned to look down, trying to find the clean diapers and gasped upon seeing there was none. The worried stallion asked. ”Hey, whewe did ta diapees go?!”

Pound turned to see that Filthy Rich had all the clean diapers behind him with a toy cash register. He was banging on the keys and he chirped. “You want a diapee? Tats five bits, pwease.”

Pound Cake grumbled irritably as he held the foal down and shouted. “Awe ya sewious?! Come on! I shouwd put ya in time out too!”

Filthy Rich came over. “One diapee, one bit, tat’s my finaw offew. Take it or weave it.”

Pound grumbled a bit as Filthy Rich hoofed him a diaper. Filthy smirked, waddling back to his diaper stash.

Caramel whimpered as he was tapped into his new, clean diaper. Pound placed him down and let him waddle over to the dozens of colts as the stallion went over to Filthy Rich (after washing his hooves with some nearby hoof sanitizer). Filthy had diapers, plushies and other toys in a huge stash as Pound Cake growled. “So ya hoawding evewyting, ya poopy head?!”

Filthy turned around. “Not hoawding! I making a pwofit. See, if a pony wants a toy, they gots to give me toy money fiwst. I showing tem how money wowks.”

Pound Cake eyed him. “Ten why did ya make me spend a bit?”

Filthy Rich smirked. “Because ya know by now how weal money wowks, and I assumed ya gets some tips!”

Pound chuckled. “Even as a foal ya pretty smawt. Weww, I guess tis wowks.” He then turned to see Caramel waddling over, grunting as he pulled the wagon to Filthy Rich. “Hewe’s some mowe new pwushies to seww!”

The stallion rolled his eyes and turned across to see how the filly side was doing. Pumpkin Cake was having a tea party with the fillies. They were all sitting around, playing with dolls and building with blocks. Redheart was waddling all over, taking plushies and teddy bears, putting band-aids on them and giving them checkups with a toy doctor kit. Cheerilee was in a frilly baby blue dress, sitting with many foals sitting around a small table, teaching them ABCs on a mini chalkboard.

Pumpkin Cake looked up with a smile. “Oh hey, Pound, how it going?”

Pound Cake’s mouth just dropped upon seeing how easy everything was with Pumpkin Cake’s half of the nursery. She was looking so calm and peaceful compared to his chaotic mess with the colts. He grumbled. “Now I kinda wished that I born as a fiwwy. Fiwwies seem to have it eaisew. Ow maybe I just got the wowst of the cowts.”

While Pound and Pumpkin were busy caring for the dozens of foals at Sugarcube Corner, Rarity was going across Ponyville to Sweet Apple Acres to find Applejack. She reached the front of the door of the Apple family’s house and knocked rapidly as she shouted. “Come on! Open up! This is an emergency!”

To the mare’s surprised, she saw Apple Bloom open the door. The filly eyed her at first as Rarity asked. “Hey, Apple Bloom, is your sister here? We need her help!”

Apple Bloom eyed her and replied. “Yeah, she’s here, but ya look new! Did you move to Ponyville recently or somethin’?”

Rarity stomped a hoof. “I’m not a new filly, Apple Bloom! I’m Rarity!”

“Rarity?!” The farm filly gasped as she turned to see Sweetie Belle’s eyes glowing as she squealed. “You’re a filly?! This is so cool! I just came over here to hang out with Apple Bloom since Miss.Cheerilee never showed up to teach. I had no idea you were my age! But where are Hoity Toity and Blueblood? Shouldn’t they be with you?”

“I left them in capeable hooves. I trust them to behave,” Rarity explained. “Now please, you must let me talk to Applejack! It’s urgent!”

Both Apple Bloom and Sweetie Belle were fascinated, however, and asked Rarity dozens of questions as Applejack came over. “Hey, what's goin’ on out here?” Rarity looked over and whimpered as Applejack burst into laughter. “Oh, Rarity! I didn't notice ya there for a second, how did ya turn yourself into a filly?”

The little filly got flustered and stomped a hoof. “It was those darn magic muffins! It turned me into a school filly along with dozens of ponies who are foals at Sugarcube Corner!”

Applejack gulped. “Oh, I guess that's why ya came to find me.”

Rarity gave a nod as Apple Bloom turned around and asked. “So um...while you go over to watch those foals, can we please play with Rarity?”

Sweetie Belle shouted in delight! “Yeah! This would be a great opportunity for us to bond as sisters! Especially since she was too busy with Hoity Toity and Blueblood to do the Sisterhooves Social.”

Rarity whined. “Oh come on! I’m not really a school filly and I have my cutie mark, so that disqualifies me as a Cutie Mark Crusader! Besides, I’m not interested in getting covered in tree sap and pine needles!”

Apple Bloom came over, examined Rarity’s rump and commented. “Looks like you’re a blank flank to me, so that means you’re a Cutie Mark Crusader and you’re comin’ with us.”

Applejack chuckled. “Seems like they make some good points. Alright, ya convinced me. Rarity you play with my little sis and your twin sis while I go help take care of a bunch of foals. Ain’t worried about Zecora, Big Macintosh and Granny Smith’ll keep her out of trouble. She’s startin’ to get old enough to help out around the farm, just a little.”

Apple Bloom and Sweetie cheered as they dragged Rarity along who shouted in protest. “I'm not her twin sister! Watch my mane! Please, not the tree house! Anything but the tree house! I just got my hooves done!”

Applejack snickered a bit at Rarity’s protests, before she sighed. “Alright, time to head to Sugarcube Corner and see what's goin’ on. After I tell Big Mac and Granny Smith to watch Zecora. Can’t have her addin’ onto the troubles. Sounds like I’ll already be in over my head.”

While Rarity was (reluctantly) hanging out with the Cutie Mark Crusaders, Twilight was dealing with her own situation in Canterlot, standing by in Canterlot as Celestia flew down from the sky to see the little filly Twilight.

The princess couldn't help but blush upon seeing her most trusted student regressed to such an age. She tried to whisper. “My goodness, Twilight. You look exactly like the way you did when we first met. Oh, you were so adorable back then."

Twilight blushed, quite embarrassed by the comment as she sighed. “Y-yeah, well...um...we should get going. You sure waking up Discord is the best idea, princess? The last time he was free, he nearly drove my friends and I apart, and literally turned Ponyville upside down. This time, we don’t have the Elements of Harmony to stop him.”

Celestia replied. “If it were just a few ponies like you originally reported, I’d feel confident that Luna and I could reverse the damages. But this is chaos magic on a level I have rarely seen before. I doubt even Discord could’ve imagined it becoming this out of control. We don’t have a choice at this point. We can’t have dozens of ponies stay as foals. There’s already quite a few as it is, and ponies were already starting to panic.”

Twilight then went onto Celestia’s back as she flew off towards the castle gardens. There, they came upon Discord’s statue in his frightened pose from losing to the mane six a few months earlier.

Celestia sighed. “We have no other means of recourse. With you and Rarity as school fillies, and Pinkie Pie as a foal, I don’t think the elements will work. This is just a gamble at this point, but it’s the only gamble that has any chance of solving the problem before it gets out of control.”

The princess lit her horn and released the statue as it cracked, and the draconequus broke through the stone.

Discord rose up and stretched, before he looked down at Celestia and the filly Twilight, and burst into laughter. “Oh yes, the magic muffins really did it! They worked! How many ponies are foals now?! Come on, tell me!”

Twilight growled. “There’s a lot, Discord. Now, you’ve had your fun, so can you please help turn me and them back to normal? If you do, then maybe we won’t have to turn you back to stone afterwards. Princess Celestia seems to think she could find a good use for your ‘abilities’.”

Discord smirked. “Well, I suppose I could do that...however, I think I need something in return considering I won’t turn Equestria into my own playground. I need some entertainment…” He then turned to Celestia and told her. “Here's the deal, if I do this I get to go to my dimension and watch as you and Luna are turned into foals, and Twilight has to care for you for a year!”

Twilight stomped a hoof in protest and wanted to say something, but Celestia shook her head and turned to discord. “It's a deal, but only for a month and no longer! Break it, and I’ll have Twilight and her friends turn you back to stone forever!”

Discord smirked. “Alright, done! But first, I think I need a little insurance to know you won’t try to double cross me. I think you two deserve some time off from all your work.” He snapped a claw and Twilight and Celestia teleported with him in a cloud of smoke.

chapter seven: Learning From Foals

Applejack was quite nervous as she slowly walked inside Sugarcube Corner. The farm mare could hear the cries of foals as she gradually walked upstairs. She gulped as she slowly entered the nursery and was quite surprised upon what her eyes beheld.

Pumpkin Cake was still having a tea party with all the fillies on the left side of the nursery, everything seemed to be under control more or less. So Applejack continued walking through, turning to see that Cheerilee was busy playing school with a dozen other fillies all sitting down on the floor, learning about shapes and colors. Meanwhile, Nurse Redheart was been busy putting diapers on all the dolls and plushies in the corner of the room.

Applejack dawwed at the scene, she couldn’t help but walk over to Nurse Redheart and ask her. “So, what ya doin’? Looks like ya been busy.”

Nurse Redheart gave a nod as she explained. “Yeah, I put diapees on ta dollies and ta pwushies. I awso gave tem checkups so tey dun get so sick!!” She then pulled out her plastic stethoscope, showing it off.

Applejack couldn’t help but laugh and daww. “Aww, what a little cutie. Well, keep up the good work, might as well get all the practice you can while you’re a foal. Betcha you have to put diapers on baby ponies all the time at the hospital.” The little nurse gave an excited nod and waddled back to diapering another doll.

Applejack then walked over to the colts side of the nursery, where everything was in chaos. She came upon Filthy Rich bartering with colts as she smirked. “I see you’re still tryin’ to sell toys even as a little colt. And here I thought Spoiled was the rotten apple of the bunch. Now I can see why your mama called ya ‘Filthy’.”

The toddler got up and babbled. “Dun caww me tat! I not nasty! I just teachin’ tese foaws about money! Ya nevew too wittwe to weawn about tat, evewyting costs somethin;!” He then showed a toy cash register filled to the brim with toy money.

Applejack gave a small nod of approval. “Well, at least you’re not bein’ a brat and hoardin’ all those toys for yourself like a poopie head.”

Filthy Rich rolled his eyes. “Of course not, and dun caww me a poopie head. I know tat Discord is gonna tuwn us back to normaw, so I just having some fun untiw ten! I used to play gwocewy stowe aww ta time when I was wittwe!”

Applejack then turned to see that Caramel was having his own tea party with a couple of dolls while wearing a pink, frilly dress. The colt squeaked and stammered, embarrassed to be caught by the pony who already often got on his case for losing grass seeds during Winter Wrap Up. “A….A...Abbwejackie! Wha ya doin hewe?!”

The fare mare smirked at the colt and simply replied. “I came to watch y’all of course. I didn’ know ya liked dolls.”

Caramel gulped and whimpered. “Yeah? We...well this is gonna be ta onwy time I couwd be a foaw again. So I thought it wouwd be intewesting to twy somethin’ I nevew done befowe.”

Applejack patted his little crop of mane and cooed. “Ah, don’t be embarrassed, sugarcube, no one’s judging you. Just go on and play, sugarcube. And let me know if you need somethin’, ‘cause that’s what I’m here for.” The little colt hugged his plushie to his chest.

Applejack then heard a crash, looking over to see the rest of the rambunctious foals were standing around. Pound Cake who was on the ground and swarmed by colts whacking him with foam swords. The farm mare became rather furious as she slammed a hoof on the ground and shouted. “That’s quite enough, y’all need to listen to Pound Cake! He’s working his tail off tryin’ ta take care of ya! Yes, I know he’s a big foal, but he’s bigger than all of ya and that means he deserves your respect. He’d do the same if any of you were bigger than him.”

The colts all suddenly stopped and whimpered in unison. “Yes, Abbwejackie. We sowwy.”

Applejack gave a nod as she replied., “Good. Now if ya want you can continue runnin’ around. But no fightin; and keep it down. Y’all are gonna bring the house down on top of us if you keep shoutin’ like that.”

The colts all chirped. “Otay Abbwejackie!” They then went back to wacking each other with foam swords and running around, but things were a lot less chaotic.

Pound Cake gave a sigh of relief as he stood up. “Tanks, Abbwejackie, I was on my wast wegs twying to keep up with tose foaws.”

Applejack came over and chuckled. “Wel, I hope this gives ya some perspective on how you and Pumpkin Cake drive your parents and Pinkie Pie crazy.”

Pound Cake sighed as he gave a nod. “Right, I suwe do. No wondew tey awways wook so twied. I pwomice we gonna be mowe behaved when we tuwn back to babies,” Then he sighed. “Weww, I bettew make sure Pinkie Pie isn’t tuwning any other ponies into foaws.”

They both turned to see that Pinkie Pie was talking to Derpy and Dr. Whooves, discussing something in baby babble.

Applejack came over as Pinkie Pie looked up, blushing as she scrunched her diaper between her legs. The farm mare picked her up by the neck. “I see you’ve been causin’ a lot of trouble, little missy. Not even Apple Bloom was as naughty as you when she was a foal. And boy, Apple Bloom was a little devil. Granny’s got the baby pictures to prove it.”

Pinkie Pie blushed a little as she scrunched her diaper between her legs again and whimpered. “Yeah, I did a big oopsie and tuwned wots of ponies into babies. Now me in a sowt of time out.”

Applejack eyed Pinkie as she asked. “Sure, you turned everypony into foals by accident. Now where’s Twilight? I’m sure she can fix all of this. Where she’d go?”

Pinkie shook her head as she twirled about nervously and continued. “Uh, she went to find Discowd so he can wevwse ta speww.”

Applejack rubbed a hoof over her mane and sighed. “Guess I’m gonna have to just stay here and watch all of y’all until he decides to help. Now how about we get your diaper changed, Stinky Pie? It looks soaked, how have you not gotten a rash yet?”

Pinkie blinked in surprise as she looked down at her sodden, yellow stained padding, and squeaked. “I actuawwy peed?! Sowie, Abbwejackie, I didn’t know I pee pee. Guess I just had too much to notice.”

Applejack just chuckled then bent over, picked the squirming Pinkie up, and cooed. “Oh, don’t you worry bout a thing, missy. I’ll get you changed. It’s only natural for foals to wet themselves uncontrollably. At least you didn’t make a poopie.” Applejack then went over to the changing table.

Meanwhile, Derpy waddled over to her husband, who was busy making a robot out of cardboard and glue as she asked. “Hey, Whoovesy I gots a question?”

Dr. Whooves turned to his wife and asked. “So, um, Dewpy. Twily is gonna come back with Discowd soon and change us back to aduwts. Wight?”

Derpy nodded. “Bu I wana ask if maybe...c...can ya stay a baby?”

Dr. Whooves blinked in surprise at what his wife told him and shouted. “Why?! Dun ya want me to be a big cowt?!” He blushed at how he said that, making Derpy laugh as she replied. “Weww...it would be fun with ya being a baby and I be ya mommy, just fow a wittwe bit. Sounds wike ya nevew had anyone cawe fow ya as a baby.”

Dr. Whooves shrugged. “Weww...I dun know...wet's ask Twily if tas wouwd be okay. Thewe’s a wot of ponies staying as foaws awweady.”

Derpy blushed and hugged Dr Whooves. “Otay, wew if we do become big ponies I might put a diapee on ya. Ya just so cute in tem. I pwomise I won’t wet Dinky tease ya ovew tem.”

Dr. Whooves kicked about, making his diaper crinkle as he giggled. “Oh stop, ya cuter in diapees ten me.”

The grey coated pegasus filly waddled over, poked her husband’s chubby pot belly and jeered. ”Nah uh, ya cuter. Ya got tat big, chubby tummy. Is wound wike a bawwoon!”

Dr. Whooves blushed and put hooves over his tummy with an embarrassed look on his face as he whined. “It just baby fat! Ya got more ten me fwom eating aww tose muffins. Tey not good fow ya.”

Derpy looked down at her own, pudgy tummy. “I guess so. Thewes gots to be a way to pwhove whose ta cutest.”

Dr. Whooves turned to Applejack as a big smile spread over his face. “Whoever makes Abbwejackie daww ta most wins!”

Derpy smirked. “Ya on, mistew! Winnew gets stay a baby!”

Dr. Whooves turned to Pinkie (now in a fresh diaper) and asked her. “Hey, Pinkie we need ya hewp. Dewpy and I are gonna have a cute contest: Whoeva makes Abbwejackie daww ta most stays a baby.”

Pinkie giggled with delight. “Tat sounds wike ta siwwiest contest eva! Ya want me to be ta judge, wight?” The two foals both nodded and she smirked. “Otay, I gots some time befowe Pound and Pumpkin Cake need me. But fiwst, ya two need Pinkie’s adowabwe makeovew!” She then got out a kit and the two little foals oohed at the big, pink colored box with wide eyes.

Dr. Whooves gave a blink of surprise and whispered. “Wha’s in thewe? It wooks biggew on the inside, just wike ta tawdis!”

Pinkie smirked. “Oh, you’ww see! Ya two gonna be ta cutest foals eva! Just howd stiww and wet me do my wowk.”

While Pinkie Pie was giving Dr. Whooves and Derpy an “adorable makeover”, and Applejack was handling the dozens of regressed ponies (and keeping them under control with the help of the Cake Twins), Twilight and Celestia both blinked in surprise to find themselves in a classroom.

It was decorated with posters of basic colors, shapes and the alphabet. There was a big, pink rug in the middle, and a polka dot carpeted floor. The two mares were confused as to how they’d gotten there, and then they both looked up to see a nice looking, blue colored unicorn mare talking to a brown coated earth pony mare with bright yellow eyes. “Yes, I would like to have my foals attend your class just for today if that's okay with you?”

The teacher waved a hoof. “Oh, that would be just fine. I love to see some new faces in my classroom!” The mare then looked down at the two fillies and cooed. “Hello you two! You must be Twily and Tia, correct?”

The two fillies both squeaked seeing they had backpacks on their backs and Celestia gasped seeing her cutie mark was gone! She then exclaimed. “My cutie mark! What did you do, Discord?!”

The brown coated earth pony mare with glowing yellow eyes cooed. “I’m not Discord, sweetie I’m your mommy. Now you two be nice and be on your best behavior. I'll pick you up around four.” She then left the classroom before Twilight and Celestia could say or do anything.

The teacher then looked down at the two and cooed. “Alright sweeties, come and meet the rest of the class!” The two filles gave exasperated sighs as they were then lead into a classroom filled with school foals all looking up at them with surprised looks and giggling.

Twilight blushed. “But why?!”

The teacher looked down at Twilight. “Because it's what we do with every new student. Now go on and tell the class your name, age and something about yourself.”

The young filly gulped nervously, it was just like her first day of magic kindergarten. She walked forward and whimpered. “My name is Twily and I’m six years old, and, um...I like to read books.”

The class giggled and some ponies even clapped. The teacher looked down. “Oh really? What a smart little filly, learning to read. We’re actually learning the alphabet right now, we left off at D.”

Twilight just stammered. ”W...well...I just um...read that one story ‘The Silly Diaper Filly’.” She squealed at what she just said, making many ponies burst into laugh.

The teacher cooed. “That’s nice, sweetie. Now go and sit down at any of the empty desks.” Twilight quickly ran to an open desk, trying to keep her head down.

The teacher turned to Celestia and cooed. “Your turn, sweetheart. Go on and introduce yourself to the class.”

Celestia angrily stomped forward and grumbled. “My name is Tia and I six too, and I like eating cake.”

The entire class cheered. “Yeah, Tia!”

The teacher giggled and asked the little filly, “What's your favorite flavour of cake, Tia?”

Celestia blushed and explained. “I like... um... vanilla cake with pink icing, and cute little candies that look like suns!”

The teacher dawwed and gave Celestia a pat on the back. “That sounds delicious. Alright now, go on and find an empty desk.”

The regressed princess rolled her eyes, sitting down on a desk and grumbling. “Discord is going to pay for this.”

Twilight turned to Celestia with an embarrassed look on her face. “Uh, yeah, well this shouldn't be too hard. We could even teach these foals a thing or two about magic.”

Celestia rolled her eyes as the teacher began her lesson. “Today we're going to discuss the basics of magic. So last week we learned how to change colors on objects, now let’s see if you can do it yourselves.”

The class cheered and Celestia groaned as Twilight raised a hoof, and the teacher turned and asked. “Yes, Twily? What is it?”

The little filly asked. “Um...that sound like really basic magic that babies get taught. Aren't we in magic kindergarten?”

The teacher cooed. “Oh no, silly, this is magic preschool. Also, your mommy told me you two are still in potty training, so if you need to go potty just let me know.”

The two fillies squeaked in embarrassment, looking down at their rumps to see pull-ups modeled after Celestia and Luna’s cutie marks as the entire class erupted in laughter.

While the teacher tried to get the class to settle down. Twilight turned to Celestia with a glare and growled. “Oh yeah, Discord is definitely going to pay for this!”

As Celestia and Twilight learned about colors and shapes (among other things) Derpy and Dr. Whooves were now in super thick diapers, making it hard for the two to even get up! Foal powder billowed out of the leg holes, and they had cute bonnets wrapped around their heads. Tons of foals were now watching and awwed at the two, who sat there with their cheeks now bright red from the embrasement.
Pinkie then raised a hoof, put on a plastic headset and proclaimed. “Alwighty, is time fow ta cutest foal evew competition! Whoevea can make Abbwejackie daww ta most wins! I’ww cacuwate it with my daww metew! I wiww awso be ta pwonucer fow tis cute competition!” She raised up a small device as Dr. Whooves explained. “I made it mysewf. It simpwe, wheneva Dewpy ow I do something cute ta daww metew will measure how wong and woud ta dawws awe. We wiww each get a tuwn so it wiww be faiw.”

Pinkie Pie gave a nod and then asked. “Otay, so want to fwip a coin to see who goes fiwst?”

Derpy shouted. “Nah, is otay! I gonna go fiwst!”

The pink coated foal looked over at Derpy and gave a nod. “Otay, ya good to go.Ya got five minutes to make Abbwekjackie daww.”

Derpy gave a sigh as she got up on her hooves and waddled over to Applejack. The farm mare was busy storing diaper supplies underneath the changing table. She didn't notice Derpy as she grabbed the mare’s mane and started to suck on it.

Pinkie oohed.” Wooks wike Derpy went for ta cwassic mane sucking. I dun know why foals wike the taste of manes so much.”

Applejack turned and dawwed as she asked. “Hey, Derpy, what ya doin’, sugarcube?”

Derpy waddled over and babbled incoherent gibberish as she rubbed her hooves over Applejack’s face. The farm mare laughed, picked her up by the diaper, and checked it. “Huh, you’re clean and seem to be okay. Don’t know why you’re bein’ so cute.” Derpy then somehow started to climb over Applejack’s head, making her daww even more as Derpy’s diapered rump shook about.

Pinkie squealed! “Oh, wook at that! Derpy is shoving her adowable diapee in Abbwejackie’s face! Is gonna be hawd fow Dw. Whooves to top tat!”

Dr. Whooves shoved his hooves across his chest and grumbled. “Oh yeah?! I can be cuter, ya just watch!”

Derpy, meanwhile, squealed as she fell down from Applejack’s head, plopped onto the ground below, and slammed into the seat of her enormous diaper, making her fall over and reveal her thickly padded bottom.

Applejack dawwed again, making the “daww meter” go way up as Pinkie chirped. “What a finish! She was able to get the daww metew aww ta way to ta top!”

Derpy waddled back with a smug grin on her face. “Beat tat, Mistew Doctow!”

Dr. Whooves pouted as he waddled over and babbled. “I can beat tat! Ya just watch!” He strode over to Applejack and proceeded over to the changing table. He took out two diapers and began taping them over his rump quite clumsily. But somehow the little colt managed to diaper himself into two more diapers, making his legs spread out even more underneath all that padding. He then took out a bottle of foal powder with a gulp and sighed. “Is time fow ta diapee dance,” He then poured the entire bottle of foal powder into the front of his diaper and squeaked. “Oh Cewestia!” The foal began to dance around as foal powder billowed out from the leg holes, as Applejack looked over at Dr. Whooves doing his diaper dance. She dawwed again and the meter’s needle went up half way as Pinkie proclaimed. “Wook at tat! Whoovesy is doin ta famous diapee dance! I taught onwy Shining Awmow and Bwight Wing did tat!”

Dr. Whooves continued his diaper dance as Applejack watched and giggled at the silly dance. The little colt danced around in his padding, making foal powder billow out like a big white cloud. He didn't anticipate the thickness of his tripled diapered rump as he suddenly swayed back and plopped onto his rump with a surprised look on his face. Then without realising it, he began to wet himself and bushed as his second and third diaper fell off, exposing his soggy, yellowed diaper.

Applejack gave another long dawww as Pinkie’s daww meter went all the way up again as she commented. “Oh deaw! It wowks wike Dr. Whooves cwumsy diapee change and him putting too much foal powder weawwy made tat siwwy diaper dance work! Which of course was made famous by Shining Awmow when he was a foaw. You can verify that with his mommy, who has his embawwassing baby photos. Thewe’s even one of him fighting ta eviw potty monstew! But, now is going to be hawd to see who’s going to win tis cute contest.”

After Dr. Whooves had his diaper changed he was plopped back down right besides Derpy, who couldn't help but give her husband a cute boop on the nose. Pinkie then stood up proudly in her diaper and proclaimed. “Is concwuded! Both Dw. Whoovesy and Dewpy awe cute!”

They both blushed as Derpy giggled. “Wooks wike tis whowe contest was a waste of time.”

Dr. Whooves just rolled his eyes and plopped onto his diaper. “Fine, whateva, wets go pway Candy Wand. Whoeva is ta winnew in tat wins instead.”

Derpy smirked. “Ya on!" She waddled off to grab the box, but stopped as she turned around and asked. "But um, di ya wemeba ya cowows?”

Dr. Whooves scoffed. “Of cowse I do!” He then looked down at some blocks. I wemebwa bwue, wed, gween...um…" He picked up a purple block. “Oh, what tis one again?"

Derpy couldn't help but giggle. “Wooks wike we weawwy awe becoming foaws…”

Dr. Whooves blushed as he scrunched his diaper between his legs out of embarrassment and whimpered. “Yeah, maybe...hopefuwwy I dun fowget too much more…”

Pinkie saw that with Dr. Whooves and Derpy’s silly contest over, and Applejack was taking care of things, there was only one thing left for her to do. Looking at the Cake Twins’ diapers, she could see that their next potty time was fast approaching. And she squealed, toddling over to them. “Gweat! Now’s my time to go teach Pound and Pumpkin Cake about ta big potty! I just hope I have to go.”

chapter Nine: New foals are here

Rarity was now wearing a red cape tied around her neck in her workshop, sweating profusely as she was trying to work on a dress that she was trying to make with a sewing machine. The filly was groaning as she was trying to stitch the makeshift garment together. The Cutie Mark Crusaders were watching with intensity as Sweetie Belle trotted over and snickered. “Looks like your doing a good job with that, huh sis?”

The filly fashionista finished the dress and pulled it out. She groaned upon seeing how badly her dress looked, it was an unsightly patchwork of pink, purple and white all stitched together quite sloppily. She couldn’t stop herself and started to cry. “Ugh it looks like a bad arts and crafts project! How could I mess this up so badly?!”

Sweetie Belle looked it over and giggled. “It looks ok to me, Rarity. But I guess your skills are further behind than before you were turned into a toddler.”

Rarity turned around towards her sister and snapped. “I am not a toddler! I’m the same age as you, Sweetie Belle! I most certainly am not in potty training, I’m fully trained and proud of it!”

Scootaloo looked Rarity over. “So let me ask you something, do you remember your shapes and colors? Because that dress is mismatched with like five different fabrics.”

Apple Bloom blushed as she took the dress into her hooves and commented. “Yeah, I don’t mean to be rude, but that looks like a clown’s outfit.”

The fashion filly turned around with her face turning beet red. “Hey! I know my colors, that dress is yellow, green and light blue!”

All three fillies turned to look at each other, then they all suddenly burst into fits of laughter. Rarity was now a bit nervous and quite embarrassed at seeing how the other Crusaders reacted, and whimpered. “Um...yeah! W-well I...um…I still know my shapes..” She picked up a ball of yarn and replied, “This is a square, see?!”

Sweetie Belle blushed as she walked over. “Um...Rarity, are you feeling ok? I mean, you look younger.”

The unicorn filly blinked as she felt a soft, pillow like fabric between her legs. She could hear crinkling from below as well. She then looked down and gasped upon seeing a purple colored pull-up between her legs, with blue diamond prints on the seat. The Crusaders all giggled and snickered as Rarity began to tear up.

Sweetie Belle cooed. “Don’t cry, Rarity, you’re going to be ok. Twilight’s working on a solution.” She gave her sister a pat on the back, trying to calm her down.

Discord then popped into the boutique and blushed as he replied. “Oh dear, sorry for popping in on an emotional moment. Gosh, I have the worst timing.”

The fillies all looked up at Discord as Sweetie Belle eyed him and asked. “Hey, did you do this to my sister?”

Discord came over and raised his claws. “Yes, I’m guilty as charged! I admit it.”

Sweetie Belle came over and stomped her hoof down. “I don’t mind you turning my sister into a baby. But I would like to ask why? Why would you do this now? Don’t you know this is a bad time?”

Discord then gave Rarity a pat on the head. “Well, my reasons are simple. Twilight is going to watch Princess Celestia and Luna as they will be turned into babies, it’s part of a deal. I made a similar deal with Pinkie Pie to return things more or less to normal on her end.”

Sweetie Belle squeaked. “Really?! Wow!” But then she gulped. “So how long is Rarity going to be a little filly?”

Discord snickered as he replied. “Only a month.”

The three fillies all shouted at once. “A month, really?!”

Rarity stomped about and whined. “Why a month?! I don’t want to spend another day like this!”

The draconequus looked up and replied. “Because that’s how long it will be for Twilight to watch the princesses. I need to make sure that her friends don’t intervene.”

Sweetie Belle squealed with delight! “That means Rarity is going to stay as a little filly!”

Scootaloo bounced around and exclaimed! “Oh, that is awesome! Does that mean Rainbow Dash is going to be a cute little toddler?!”

Apple Bloom also exclaimed. “And does that mean I’m goin’ to be Applejack’s big sister?!”

Discord had to hold back his laughter and replied. “Yes you are, and I think you three can help them find their cutie marks again."

The Cutie Mark Crusaders all looked at each other, and then clapped their hooves together and cheered. “More Cutie Mark Crusaders, yay!”

Rarity groaned as Discord tied a big purple ribbon into her mane. “Don’t worry, Applejack is a filly already,” He told her. “Now I just need to find Rainbow Dash,” He then had them follow him out onto the road, showed them a magical pink wagon like object, and instructed. “Now all of you come on and get in the chaosmobile.”

They all piled into the pink van, and Rarity was buckled into a toddler’s seat. Discord patted the pull-up and chuckled. “Now don’t you worry, Pinkie Pie is going to take good care of you.”

Rarity crossed her hooves with a pout on her face. “She better. I may be a filly, but I got high standards: Wike no yucky food, I pick my nap times, and I dun wana go to preschool.”

Discord chuckled. “My, you’re going to be a hoofful. Well, hopefully Pinkie Pie can teach you some manners, cutie.” He poked the pull-up making Rarity blush. “H-hey! I a high-class filly I dun need pull-ups!"

While Discord was dealing with a fussy Rarity, Rainbow Dash was sitting with Fluttershy at a table outside a restaurant, the two having lunch together as Rainbow grumbled. “It’s not fair. Honestly, Rarity and Applejack are getting all the attention just because they have foals. I wouldn’t mind having foals! I love hanging out with Scootaloo!”

Fluttershy blushed and asked. “So... would you want to turn back into a foal?"

Rainbow Dash blushed and explained. “W...well, no. But I wouldn’t mind if Soarin or Spitfire became a baby, temporarily of course. It would be so cool to teach the best Wonderbolts how to fly."

Fluttershy blushed a little as she nodded, then the mare eyed something on her plate. As she looked down and asked. “Um...did, we order dinosaur shaped tofu nuggets?”

Rainbow Dash scratched her head and replied. “Huh, of course not. What are you talking about?” She looked down at her food and saw a pink, plastic plate full of tofu nuggets, and her glass filled with soda was now a baby blue sippy cup. She shouted. “What the hay?! Who turned my soda into a sippy cup?!”

Fluttershy squealed as her chair turned into a booster seat, as did Rainbow Dash’s! They both squeaked as they shrunk down, regressing slowly as pull-ups appeared around their rumps. Then a pink wagon like object flew out of the sky, and landed near the table as Discord came out and asked. “How are my little fillies doing?”

Rainbow Dash turned around with a sneer and shouted. “Discord! Seriously, what are you doing here?!”

The chaos maker snickered. “Just making sure my new foals are well fed and taken care of.”

Rainbow Dash grew angry as she sarcastically growled. “Oh really? Well thanks, I’m so happy you turned us into toddlers. Now please turn us back to normal?”

Discord shrugged and explained. “I don’t think so, probably not for a month at least.”

Fluttershy blushed as she placed her hooves over her head and whimpered. “D…Discord, why are you doing this?”

The draconequus flew over and gave them both a pat on the head. “Because you ponies as foals are just so cute!” Both foals glared at him, and he scoffed. “Alright, alright, it’s because I made a deal with Twilight. She’s going to take care of the princesses as foals, and I can’t have you helping her.”

Rainbow Dash rolled her eyes and grumbled. “Seriously?! You think after all this we’re not going to turn you into stone?!”

Discord crossed his claws and scoffed. “Yeah right. Twilight and I have an agreement, and I’m just making sure she doesn’t break it.” He then opened the side door of the wagon. The Cutie Mark Crusaders all squealed with delight as they rushed over, cooing over the regressed Fluttershy and Rainbow Dash as they sat there in the booster seats, blushing.

Fluttershy turned towards Rarity, who was still in her toddler seat, and asked. “Why we in tese siwwy seats?”

Rarity started to whine. “I dun know, Dissy is just being Dissy! Awso I told him I dun need puww-ups and he weft tem on anyways!”

Rainbow Dash looked down at hers (they were Wonderbolt themed) and shrugged. “Mine awe supew coow! I dun know what ya whining about, Wawity. Is not wike ya have to use tem.”

Fluttershy scrunched her cute pink pull-up (which had cute bunnies printed on the padding) between her legs. “Yeah, tey awe coow. I tink Dissy has a good taste in puww-ups if ya ask me.”

Discord slapped his claws together and cooed. “Alright little ones, you all buckled up?”

They all gave nods as the excited Cutie Mark Crusaders shouted. “Yeah! Lets go!”

Discord chuckled, “Arlighty then, let’s get you all to Sugarcube Corner, on the double!”

After packing the wagon a second time, Discord flew it to Sugarcube Corner and appeared near a window. He opened it and with a flick of a claw Fluttershy, Rainbow Dash, and Rarity all appeared in the nursery, blushing as they sat there with Applejack, who was running around with a smile on her face. Discord turned towards Pinkie Pie. “Here you go, Pinkie Pie, three more little fillies for you and the twins to take care of.”
.
Pinkie looked down and gasped to see the Cutie Mark Crusaders with them as they squealed. “We’re going to help too!”

Pinkie then looked up with a pleading smile. “Uh, thanks, I guess,” She turned to Discord. “I assume you’re going to turn Twilight, Celestia, and Luna into babies now?”

Discord snickered and waved a claw as he casually explained. “Well, Celestia and Luna will be turned into foals, and Twilight will be the one taking care of them. But you’ve got your hooves full as it is.”

Pinkie Pie gave a long, exasperated sigh. “Ok, I’ll do my best. But remember, it’s only for a month, then everyone has to go back to normal.”

The draconequus flew over. “Don’t worry, you’re going to do just fine. I packed your changing table with an infinite supply of diaper changing supplies. And I’m a draconequus of my word, a month is all it will be and then everypony who wasn’t already a foal goes back to being normal.”

Pound Cake growled. “Ya bettew turn us back into babies too!”

Pumpkin Cake added. “Yeah! Ouw pawents wiww wanna see us gwow-up wight!”

“You sure you don’t wanna stay big foals?” Discord offered. “I hear you’re finally in potty training now.”

“We suwe, being a gwown-up is hawd!” Pumpkin Cake declared, and her brother nodded.

“Alright, suit yourself,” Discord replied as he waved a paw. “See you in a month!” Then he disappeared.

Twilight and Celestia were both still in Magic Daycare, unaware of anything that had transpired in Ponyville. The teacher came over and cooed. “Ok, class! How about we start doing arts and crafts?” The class cheered as they went over to a big crafts table and started messing around, pouring paint on paper, drawing over things with crayons, and making glitter fly everywhere.

Twilight took out a piece of purple construction paper, and started to smear yellow paint all over it ,trying to make a big star on the construction paper. Celestia did the same thing with a white piece of paper, but making a big yellow sun with a smiley face on it. The teacher came by a few minutes later and checked on their pull-ups. It made they both blush to see they somehow now had thick white diapers around their rumps. The teacher cooed. “You two are just a little wet. Do you want a change?”

Twilight blushed as she shook her head. “No, I’m otay.”

Celestia gave a nod. “Yeah, we fine. Wook, I made a sun!”

The teacher gave a nod and cooed. “Oh, that’s so cute! Good job Tia!”

The foals then both looked up to see the brown coated mare from earlier had returned, and they both squealed. “Mommy!”

The brown coated mare looked down and cooed. “Oh those are so cute! You two are such wonderful little artists!”

The teacher gave a nod. “Yes, they are such good little foals. Though I hope you don’t mind, I had to put them back into diapers. They had too many accidents.”

The mare gave a nod. “That’s fine, I had a feeling they weren’t quite ready for pull-ups yet. Your name was Minuette, correct?”

The mare blushed and gave a nod as a cute, little yellow coated filly with thick glasses babbled, “Can I go, Mommy? I wanna play with Twilight.”

The teacher gave the filly pat on her head and cooed. “Of course you can, later.”

The mare snickered. “Yeah, she can come over. But I have to make Twilight into a big pony first.”

The teacher scratched her head and asked. “What does that mean?”

The mare simply grinned. “Oh, don’t worry. In a month, you won’t even remember any of this.” Then she lit up her horn and disappeared.

She took the foals and placed them into a strange vehicle, strapping them into toddler seats. She made sure they were comfortable before getting into the front seat, turning back into a draconequus.

Discord turned around and asked. “You two comfortable?” Both gave reluctant nods as he pressed on a pedal and cooed. “Okay then, here we go! Next stop, Canterlot!” He then burst through the air and flew towards Canterlot Palace!

He soon arrived at the palace as the wagon appeared out of nowhere in front of a bunch of frantic nobles! He came out of the wagon with the two foals in tow and cooed. “Sorry we’re late. I had to pick them up from daycare.” He then took out the foals, and they both blushed trying to hide their diapers, just as a rather grumpy looking Princess Luna came over. “Discord, how did you escape your stone prison, fiend?!”

The draconequus just snapped a claw and scoffed. “I’ll have your soon to be caretaker explain what’s going on, little Lulu.”

Twilight was then instantly poofed into an adult and squeaked upon seeing she was now wearing a flowing, pink apron withthe words “Royal Nanny”printed on the front. She sighed, “Many ponies were turned into foals in Ponyville. So I agreed to take care of Celestia and Luna as babies for a month in order to have everypony turn back to normal.”

Luna was enraged as she shouted. “Why would you make a deal with Discord, Twilight?!”

Discord just snapped a claw and cooed. “That’s not how you should talk to your caretaker, Lulu.”

The princess turned into a foal just like her sister, babbling angrily.

Many nobles now were running out of the castle, fearing they would be turned into foals as Discord snapped a claw! The doors had a big ribbon around them that read “This is Playtime Palace: Foals and Caretakers only!”

Discord then rose into the air and started transforming the palace. The thrones were transformed into plastic training potties: One was white with Celestia’s cutie mark on it, and the other was dark blue with Luna’s cutie mark printed on it. The walls turned bright pink, and murals of cute smiling suns and sleeping crescent moons appeared on the walls. The carpeted hallways turned into baby blue foam padding. The guards and maids were all instantly transformed into various foalish objects such as plushies and teddy bears, looking at each other with embarrassed expressions. In the middle of the throne room a playpen popped up with tons of foalish toys.

Twilight just grumbled as Discord snickered. “Your month begins, good luck! You’ll most certainly need it." With a snap of a claw he teleported into thin air and disappeared.

Twilight sighed, looking down at Celestia and Luna, who were now little pudgy one year old foals in thick diapers, with their cutie marks printed on the fabric. The mare groaned. “What have I gotten myself into? This is gonna be a long month. At least Pinkie Pie will have help...”

Mr. and Mrs. Cake took the first train back to Ponyville after hearing the news about the palace being sealed off, becoming foalified, and the princesses turning into foals.

They burst into Sugarcube Corner, both shouting. “Pinkie Pie! Are you and the foals ok?!” They then heard, “Yeah, I’m fine! Just, um…come upstairs.”

Mr. and Mrs. Cake ran upstairs and burst into the nursery seeing the Cake Twins were now adults, blushing.

Pound and Pumpkin Cake stood there, unsure of what to say to their parents. All the while the four toddlers that were once the bearers of the Elements of Harmony were running around as was Derpy, who was screaming and crying. Dr. Whooves was holding the little filly, trying to keep her calm.

Pinkie Pie was busy assisting baby Hoity Toity and Prince Blueblood who were also being quite fussy. She then turned around to face Mr and Mrs. Cake with a sheepish smile and sighed. “Uh yeah,…um… I think you should sit down. I’ll try to explain what happened while you were gone. It all started with some magic muffins.”

Mrs. Cake commented. “The twins aren’t wearing diapers. Does that mean…”

Pound Cake finally managed to squeak out. “Y-yeah, we kind of potty twained. But ya can put us back in diapees when we become nowmaw.”

Prolouge: Magic Muffins

Dozens of plushies and toys lay strewn throughout the nursery within Sugarcube Corner. Pinkie Pie had been working on a new party cannon, it was smaller then her old one. The barrel was white and had little cute yellow ducks around it. Pinkie Pie wiped the sweat from her brow and proclaimed. “This one has to do it! I've tried everything else!” Pinkie had been trying to get as little power as she could into the cannon so she could shoot the twins across the room, onto a pillow of course. It was the only way she could think of to get them ready for a nap. The twins themselves were watching with foalish wonder in their eyes, chewing on teething rings. Pinkie looked down at the adorable foals and smiled. “Hey you two. Don’t worry, it’s almost done!”

Both foals babbled incoherent gibberish and started to crawl over to the little cannon, touching it with their hooves. Pinkie instantly placed both foals into the barrel of the cannon and squealed as she lit the fuse and shouted. “Ok! Ready…”

Both foals started to giggle and kick about in their diapers with anticipation. Pinkie hopped over and placed two little helmets on their heads as she cooed. “Set!”

Both foals were now squealing and wiggling their chubby hooves with anticipation. Pinkie then went to the back of the cannon, pulled the string back and shouted. “Fire!”

The foals blasted from the cannon with a loud boom and both flew across the nursery! But instead of landing on the pillows as anticipated, Mrs. Cake happened to open the door at the same time and the foals slammed into her face, making her fall backwards and plop onto her rump, making the foals burst into fits of laughter.

Pinkie quickly bounced over and apologized. “I’m so sorry, Mrs. Cake! I didn’t mean for that to happen. Really.”

Mrs. Cake just gave a big sigh as she got up, with the twins now crawling around in her mane. But then she waved a hoof, she could never stay mad at Pinkie. “It’s alright, nopony got hurt. I should’ve told you I was coming up. How about you just stay here and clean up the nursery? I’ll get these two clean and fed. Their diapers are a little wet.”

Pinkie gave a salute and chirped. “Okie dokey lokey!” She then jumped off to start cleaning up the nursery as Mrs. Cake went downstairs. She took her foals and quickly changed their diapers, then sat them into highchairs and began to feed them.

Mr. Cake poked his head out. “What was that loud boom, dear?”

Mrs .Cake just gave a big sigh and grumbled. “Pinkie Pie. Apparently she was firing the twins out of some kind of mini party cannon.”

Mr. Cake gave a sigh and whispered. “Look, sugar plum, we both know Pinkie Pie is a pretty good foalsitter when the situation calls for it. But are we sure can she really take care of the twins for a whole week all by herself?”

Mrs. Cake turned around, trying not to frown. “What other choice do we have? The wedding needs both of us and we can’t be doing that, and caring for the foals at the same time. Worst of all Twilight is so busy with her friendship studies that she doesn't have time to babysit, and you know we already asked the rest of Pinkie’s friends. They’re not gonna be available.”

Mr. Cake whispered. “But still... a whole week….with just Pinkie Pie and the twins...I mean, we may not even have a shop to come back to.”

“What are you two talking about?” Pinkie Pie chimed in, bouncing over with a big grin on her face.

The Cakes squeaked and stepped back in surprise at the sudden outburst. Mrs. Cake blushed as she explained. “Well...we...uh...were just discussing how you might need to ...uh…”

Mr. Cake gave a big sigh and explained. “Um..you know that there’s a wedding in Canterlot we’ve been hired to cater for, right? It’s a big deal and we’re going to be gone for an entire week.”

Pinkie clapped her hooves. “That sounds wonderful! Don’t worry, I can take care of things at Sugarcube Corner while you’re gone. It’ll be just like you left it.”

Mr. Cake gulped as Mrs. Cake explained. “Well...sweetie, that’s the thing. Sugarcube Corner will be closed this week, because you have a more important job to take care of.”

Pinkie’s face went white, she knew exactly what Mrs.Cake was implying. “Wait...you don’t mean…” Both ponies slowly nodded their heads as Pinkie shivered and whispered. “Fo...for a whole week?” She suddenly had flashbacks of her first time babysiting the Cake Twins by herself. How they’d run her ragged, reduced her to tears, and left messes that had taken hours to clean up.

Mrs. Cake had to shake Pinkie to get her to respond. “Pinkie? Are you alright? We could just take the twins to Canterlot and put them in daycare if you’re really not up to the task.”

But Pinkie shook her head and gave Mrs. Cake a big smile as she chirped. “What? Oh no no no, I’ll do it! I’m sure it won’t be that bad now that I know what to do.”

“Well, don't be mad, but we asked Twilight to come check in every day to make sure things are going well.” Mr. Cake cautioned.

Pinkie waved a hoof. “Don’t worry, I learned my lesson. If things get out of hoof, I’ll definitely call her.”

Mr and Mrs. Cake both gave each other small smiles of hope upon seeing that Pinkie had become more responsible. Mrs. Cake then turned to Pinkie and told her. “Hopefully that won’t be necessary, I have faith in you.”

Pinkie smiled and chirped. “It can’t be any worse than helping Rarity take care of Blueblood and Hoity Toity. Those two colts are a hoofful, believe me.”

A little later, Mr. and Mrs. Cake both had their suitcases ready near the door and were looking over things as Pinkie was dragging packages of diapers upstairs. Mrs. Cake chuckled as she saw Pinkie store them in the nursery. “Pinkie, we’re only going to be gone for one week. I’m sure you won’t need that many diapers.”

Pinkie looked up and sighed. “Well, last time I watched the twins, diaper changing was something I had a hard time getting a handle of.”

Mrs. Cake giggled. “It can’t be worse than the first time I tried changing diapers in parenting class, I somehow got a diaper on my head and another on my rump. I was so glad Carrot didn’t take any pictures.”

Pinkie said nothing, she blushed. “Well, at least I’m not the only one who did that.” She thought to herself, before she showed the Cakes a huge diaper package. On the front was printed: “Silly Filly Diapers: The thickest, most poofy diapers on the market! So comfy your little ones will never wanna be potty trained.”

Mrs. Cake laughed. “Pinkie, it’s like you could read my mind. We were starting to run low on diapers. Though I prefer slightly less thick brands, less of a hassle. Now can you come down here for a few seconds? There’s a few more things we to discuss.”

Pinkie skipped back downstairs and into the kitchen. There, Mrs. Cake explained. “I just want to let you know, I’ve posted a list of emergency contacts on the fridge. If anything goes wrong, please ask for help. I assume you know when feeding, bath, and bedtimes are, right?”

Pinkie nodded and waved a hoof. “Don’t worry, we’ll be super duper fine! You two just go and have a good time in Canterlot! And say hi to the padded guard trio for me.”

Mr. Cake then came downstairs with the foals bouncing on his back, babbling together as he hoofed them over to Pinkie. “I just put them into fresh diapers, but they still need some lunch.”

Pinkie took the foals and snuggled them close to her belly. “Don’t worry, I can handle that,” The two parents were still very nervous as they saw Pinkie holding the twins, who were babbling and kicking about. But Pinkie reassured them. “Everything will be just fine. In fact, I might even take them over to Rarity’s for a playdate.

The Cakes then picked up their duffle bags and walked out of the door. Just before leaving though, Mrs. Cake paused and turned around and cooed at her children. “You two be good for your Auntie Pinkie, okay? I don’t want hear you gave her a hard time.” Both foals just kicked about and babbled gibberish, making Mrs. Cake coo a little.

But as soon as the plump mare had closed the door, both of the foals started to whimper and bawl. Pinkie Slumped to the floor, surprised at the sudden outburst by the foals and groaned. “Oh Celestia, what did I just get myself into? I get the feeling this is gonna be a long week.”

Only a hour after the Cakes haad left Pinkie with the twins, poor Pinkie was already struggling with the foals. They were in their highchairs, screaming and throwing a tantrum by hurling their mashed peas at the walls.

Pinkie was dodging the mush and had to duck! Then, with her hooves she slapped on an army helmet and shouted. “Alright, troops, that’s enough! Calm down, that’s an order! You have ten seconds to stop your whining, or it’s the time out corner for the both of you!”

But the foals were relentless as they continued to throw more peas at Pinkie, making it clear they would not that foul tasting slop! “Ugh! Where's a bag of flour when you need one?” Pinkie grumbled to herself.

The mare then turned to see an odd looking plate of muffins on top of the nearby counter, and scratched her head. “Huh, are those... muffins? I don’t remember us making muffins,” But just then a hoofful of mashed peas smacked into her mane, making her groan. “Looks like I don't have any other choice. I have to get the twins under control somehow,” She bounced towards the muffins, took a few, and started to mash them in a bowl. Then when the muffins had the consistency of mashed potatoes she jumped over to the cranky foals and chirped. “Look what I’ve got, Mashed Muffins!”

Both foals squealed in joy as Pinkie spoon fed the two her concoction, shoving spoonfuls of the mush into their tiny, eager mouths. They ate up the mush with satisfied coos as Pinkie sighed in relief. “Oh, good. At least I’m finally getting you two to eat something,” Then she eyed the mush and put some into her mouth without a second thought as she giggled. “Yum, that tastes good!”

She scooped a few more spoonfuls into her mouths, as the twins watched Pinkie devour the mashed muffins. They began to whine and kick about angrily as Pinkie resisted the urge to roll her eyes. “Ugh. First it was throwing your throwing mashed peas all over the place and now you want more food,” Still, she continued to feed the foals and sighed, “I don’t understand how you foals could be so needy. I swear, you never do any of this when the Cakes are around.”

Pinkie finished feeding the foals the last of the mashed muffins and placed the bowl aside. That’s when she noticed something was off, she didn’t feel quite right. The party pony gasped upon seeing that she was shrinking and the counter was now above her head! The next thing she noticed was that she lost her balance and fell onto her rump. Luckily, she wasn’t hurt. Then she squeaked seeing her chubby little pink hooves and whispered. “Wh..what’s going on? Why am I so small now?!”

While Pinkie was shrinking the Cake Twins were growing. They both were stunned seeing their bodies begin to grow, as the seats underneath them groaned under the increased weight. Both foals squeaked as they grew up like magic! Now they were school foals and their diapers ripped apart underneath them. But the two only continued to grow and as they became as big as teenagers, the high chairs crumbled underneath the scared foals and broke apart with a loud crash!

Despite her small size, Pinkie still heard the loud crash! She turned around and gasped upon seeing the twins! They were now young adults sitting upon the splintered remnants of two high chairs. Pinkie looked up at the twins seeing that Pumpkin Cake was now a slim, light yellow coated unicorn mare with a cute, curly orange mane. And Pound Cake was now a big, chubby light tan coated pegasus stallion, with a short, thick crop of brown for his mane. Their eyes were much bigger, more like the size of their parents.

The twins both looked down at Pinkie with worried and confused looks, everything was hard to process. All Pinkie could do though, was blush and hold her chubby hooves up as she asked. “Uh...can one of you pick me up? I think things got a little mixed up.”

chapter Eight: Magic Daycare and Pinkie's Potty Plunge

Twilight and Celestia were now trapped in the magic preschool in Canterlot (at least they assumed it was Canterlot) as they were both struggling to change their blue blocks into different colors. Twilight’s block was now slightly darker blue much more like indigo, while Celestia's was only slightly brighter, she seemed to be trying to turn it into pink.

The teacher came over, noticing how hard they seemed to be straining. "Twily, Tia what's wrong? Every student was able to do this except you two."

The ponies both whimpered in embarrassment as Twily whined. "It's not fair! I just haven't done this spell in a while! That’s all."

Celestia also nodded and exclaimed. "Yeah, can we have more time? Please."

The teacher nodded. “Sure,” Then she sighed as she looked down. “But I specifically told you two to tell me if you needed to go potty as well."

The little purple coated filly crossed her hooves with a cute pout. "We dun need to go potty though!"

But then Celestia looked down and gasped. "Twily, look!"

Twilight peered down and gasped in surprise! Her princess pull-up was somehow soaked with pee (though thankfully there was no embarrassing puddle). Every foal began giggling and snickering as the teacher clapped her hooves. "Alright class, that's enough. How about we have snack time before nap time? Leave Twily and Tia alone, I’m sure you’ve all had accidents sometimes."

All the foals went to a big, long plastic bench as they sat down. Twilight and Celestia were brought over to a changing table at the opposite corner of the room. They were stripped of their pull-ups and cleaned up as the mare explained. “You’re clearly both in the early stages of potty training so to be safe I'm going to put nighttime diapers on and you’ll wear them during your nap."

The two groaned as Twilight whined. "This is stupid! I only had one accident!"

Celestia sighed and grumbled. "Otay, tats fine. I rather have extra protection then soak my sleeping mat."

They then were then strapped into two thick, dark blue diapers decorated with silvery moons and stars printed on the fabric. No doubt inspired by Princess Luna.

They then went over to the snack table to join the rest of the foals, and began eating apple bites, animal crackers and sippy cups filled with fruit juice. Many of the student giggled seeing upon the two in diapers making them both blush and look down in embarrassment.

Fortunately, the teacher returned and cooed. "Okay, little ones, nap time."

All the foals were lead to the back of the classroom and tucked under sleeping mats as the teacher put on lullaby music.

Both Twilight and Celestia layed down, their embarrassing diapers crinkling as both were thinking about how to get back at Discord for this. Twilight in particular grumbled as she thought. “Discord is such a poopy head! I knew he couldn’t be trusted!”

As Twilight and Celestia were napping, back at Sugarcube Corner Applejack was still busy with Derpy, Doctor Whooves, and the other regressed ponies. So no one noticed as Pinkie waddled out of the nursery with Pound and Pumpkin Cake nervously following along.

They all entered the bathroom, Pinkie reassuring the twins. “Come on, we aww agweed. Ya need to stawt using ta big potty.”

Pound Cake whimpered. “Y-yeah. But is stiww so scawy.”

Pumpkin Cake nodded. “Ya be carefuw, we dun wanna wose ya!” Then she and Pound nervously peered at the big potty, it seemed to be almost staring right back at them.

Pinkie Pie turned around and exclaimed. "Awwigh! Is time ta show ya two how to use ta big potty, again!" She then raised her hooves and blushed as she explained. "Um, can you wemove my diapee fiwst? Is on too tight."

Pound Cake bent down and took off the tabs.

With a rip, Pinkie felt her diaper be removed and tossed aside, thus making the filly place her hooves over her nether regions. She blushed before sighing. "Sowie, guess I got used to weawing a diapee. Is cowd!"

“Is otay, ya get used to it.” Pumpkin Cake replied but didn’t move forward. In fact, she watched as her brother trotted back a bit, standing beside her.

Pinkie stood up and beamed. "Anyways, now you got taught ta basics. But I gonna show ya how ta use it! Watch!" The little filly managed to somehow jump up and grab hold of the seat of the toilet, scrambling to not slide off. “Okay, ya just sit down and do ya pee pees and poo poos in the bowl,” Pinkie declared and blushed a bit. “Uh, ya dun wanna see me go.”

Pound and Pumpkin shook their heads. “Ya not foowing us again, Pinkie. We watching ya!” They both declared.

Pinkie sighed. She felt really small again, almost like when she had first been potty training and her parents were always watching over her (and they had been very strict on making her sit on the potty even if she didn’t feel like she had to do anything). Still, she concentrated and grunted as she pushed out a mess. Happily she squeaked. "Thewe I did it! See?! Is tat easy! Now ta fun pawt, ya fwush!"

The little filly stretched herself across the seat, managing to grasp the handle and force it down. The flush cycle started. Then Pinkie moved to get some toilet paper to wipe her bottom. “Ya gots to use toiwet papew when ya use ta big potty!” She explained to the twins, who were watching with half nervous and half curious looks.

But as Pinkie reached out for the roll, her hooves started to lose their grip on the seat and she slid! “Oh no!” She cried and threw her front hooves out to try to stop the fall, but they slipped through the lip of the seat!

A horrified Pound and Pumpkin rushed to the toilet as Pinkie plunged into the rapidly draining water! “Pinkie!” They cried as Pumpkin tried to light up her horn and pull Pinkie free! But alas they were too late, the flush cycle was nearly complete!

Pinkie tried to fight against the pull of the drain to no avail! She tried to cry out for help, but the flush was too loud and too powerful! It drowned her out, pulling her down the toilet and into the pipes!

Pound and Pumpkin nearly fainted from fright as the toilet refilled without a single trace of Pinkie. She was gone! “Big sis!” They cried at the top of their lungs, and forgetting about their earlier training they emptied their bladders into their diapers! The clock symbols faded completely, replaced by frowny faces as they swelled up!

The crying brought Applejack into the bathroom, panting and nearly out of breath! “What in tarnation is goin’ on here?! What happened?!” She questioned, seeing the crying twins in front of the toilet. “And where’s Pinkie Pie?!”

Pound and Pumpkin were hugging each other, whimpering and shivering. A sniffling Pound answered. “She twy to teach us how to use ta big potty! She do a poopie in it!”

“But ten she faww in and get fwushed away!” Pumpkin explained. “Now she gone, foevew! Bye bye! Potty monstew eat hew!”

Applejack sighed, trotting over and pulling both big foals into a tight hug. “Sugarcubes, first of all there’s no such thing as a potty monster. In a foal’s mind, the loud roar of the flush can sound like a monster,” She tried her best to give her voice a soothing tone as she continued to explain. “And second, the toilet lets out eventually. Pinkie’s not gone forever.”

“Bu whewe she go ten?” Pound Cake asked Applejack.

Applejack’s face morphed itself into a grimace of sorts. “Probably the sewers. All toilets and sinks are connected to it. It’s very dark and very smelly.”

Pumpkin Cake gulped. “Big sissy down thewe? We gotta wescue hew!”

The farm mare stood up, ending the hug. “I’m goin’ to rescue Pinkie, you two need to get changed out of those soggy diapers before you get a rash. And you’re goin’ to watch the other foals for me ‘til I get back,” And she firmly declared. “And from now on, without a grown-up like me around, the bathroom is strictly off limits. That way this sort of thing won’t happen again, got it?!” The twins nodded.

Pinkie’s panicked screams as she was flushed down the drain soon became screams of excitement as she rode the wave down through the pipes. “Tis is just wike a watew swide!” She declared.

The ride soon ended though, with a bump the little filly tumbled out of the pipes and face first into the sewer water where she landed with a splash. She immediately stood up, shaking the murky water from her mane, tail, and entire body. “Yuck! Tis is wowse than the fwist time I had to change the twins diapees!” She remarked, and then started to think back to them. “Oh no, the twins! I was supposed to make them not afwaid of the big potty! I messed up! Gotta get back to them!”

The regressed party pony slowly worked her way through the sewers. It was a slow, smelly trek the whole way through. But at last, she saw what looked to be a way out! Light was shimmering down from a hole! And she could hear a voice calling out. “Pinkie? You down here, sugarcube?”

Never had Pinkie felt so relieved to hear such a friendly voice in all her life. “Yeah, I hewe, Appwejackie! I gonna cwimb out!”

But the voice called back. “No can do, sugarcube. I ain’t gonna risk you fallin’ back in ‘cause ya lost your balance. Just hold tight for a second, I brought somethin’ I can use to fish ya out!” A second later, from the opening dropped a rope. A lasso, you might say. “Grab onto it and give it a tug, then I’ll know to pull ya out!” Applejack instructed “Quickly now, it ain’t good for ya to stay in those icky sewers.”

Pinkie carefully made her way over to the lasso’s location. Since her hooves were still wet from the flush and the tumble into the sewers, it was hard to grab onto the rope at first. But eventually she managed, gripping it tightly and giving it a tug. She felt a mighty yanking sensation, and light rapidly filled her vision as she was flung out of the sewers! Straight into the fountain where she somehow landed rump first. “Tat was fun! I wanna do it again!” She giggled.

But an exhausted Applejack growled at the foal as she pulled her out and plopped her onto the ground. “There’s nothin’ fun about that, sugarcube. You could’ve drowned or gotten sick! I know you didn’t mean to get flushed down the toilet, but your slip up caused a lot of problems. If you really wanted to use it and help the twins overcome their fear of it, you could’ve come to me,” Then she plugged her nose. “Ugh, and just get a whiff of yourself! You smell worse than Zecora after she fell into the pig pen and got mud in her diaper!”

Pinkie sniffed herself and nearly gagged. “Ya wight, Appwejackie! I supew stinky!”

The farm mare sighed. “Ya sure are. But I can’t be givin’ ya a bath at Sugarcube Corner. No tellin’ what you might have come into contact with,” She put a hoof to her chin. “If Rarity were here, I have a feelin’ she know how to get ya nice and clean. But since she’s currently busy, I’m gonna have to go for the next best thing,” She motioned for Pinkie to climb onto her back (after providing the foal with some wipes to clean her rump a little). “Let’s go round up the foals, and then we’re all goin’ to the spa for some rest and relaxation.”

Sometime later, a trench coat wearing Applejack stumbled in through the front door of the Ponyville Spa with Pound and Pumpkin Cake in thick, freshly powdered diapers waddling in behind her. She made sure to shut the door behind her once everypony was inside.

Aloe smiled as she greeted the trio. “Ah, Applejack. And I see you brought the Cakes’ cousins. What brings you to spa, may I ask?”

Applejack looked all around, her eyes scanning the spa to see if there were any other ponies around. There weren’t. “Well, seein’ as the coast is clear, I reckon it’s time you knew the truth,” She gestured to Pound and Pumpkin Cake first. “These are actually the Cake’s twin foals, Pound and Pumpkin Cake,” She removed her hat, pulling Pinkie Pie out of it. “This here’s Pinkie Pie. Apparently, some magic muffins caused her to become a foal, and the twins to become big ponies. And she’s not the only victim, I might add.”

Removing the trench coat, Applejack revealed that an entire army of familiar looking foals were clinging to her. They all tumbled out, some of them amazed at how much bigger the spa looked to them now. “I reckon you know Hoity Toity and Blueblood, they’re Rarity’s foals.”

“But where did other foals come from?” Aloe questioned. “Twilight said foal pandemic had stopped.”

“Apparently, there were enough magic muffins to regress everypony who ate muffins at Sugarcube Corner,” Applejack explained to Aloe. “Cheerilee, Nurse Redheart, Filthy Rich, Caramel, Derpy, and Doctor Whooves. And apparently, Rarity and Twilight got turned into fillies.”

Lotus came trotting out to join her sister, cooing at the little ones. “Ah yes, Rarity is here. She and Cutie Mark Crusaders get covered in tree sap and pine needles, and Rarity insist they come here to clean up,” She smiled at the foals. “We have perfected special spa treatment for foals and their parents. We even have swim diapers for the little ones.”

“But why are Pound and Pumpkin Cake still in diapers?” Aloe inquired, looking at the twins.

“It my fauwt! I cause foaw pandemic with muffins, and ten get fwushed twying to teach the twins how to use the big potty!” Pinkie confessed. “I need to get cweaned up befowe I go back!”

Aloe and Lotus just smiled. “Not to worry. We shall help. She can test our new foal treatment: Baby’s First Spa Day. She be clean and fresh like she still have new baby smell.”

“Great,” Applejack smiled back. “You get Pinkie all nice and clean. Don’t worry about puttin’ a swim diaper on her, she went potty before she got flushed.”

But Pinkie had already picked up one of the swim diapers. “If I gonna test new spa tweatment I gotta do it evewything a foaw would do!” She insisted, fumbling with the dark blue patterned padding that had mermares and seaponies printed on it.

Aloe just scooped up the foal while Lotus picked up the others. “We take care of everything, Applejack, darling. Why not come in for treatment yourself?”

The farm mare turned around, looking at Pound and Pumpkin Cake. “Sorry, but I think I’m gonna stay with these two big foals here. Spa treatments aren’t my thing,” Then she eyed their diapers, noticing the familiar cloak patterns and the hands on them. “Besides, it looks like my help’s gonna be needed soon. Ya know where I can find a bathroom?”

Lotus gestured a hoof. “Down the hall, first door on your right.”

Applejack smiled and shook Lotus’ hoof. “Thanks a bunch, I owe ya for everythin’! When this is all back to normal, maybe I’ll bring Zecora here. But for now, it looks like duty calls!”

The farm mare led a nervous Pound and Pumpkin Cake into the spa’s public bathrooms. Perhaps because of the huge number of ponies that had been turned into foals earlier, the spa didn’t have any customers inside its bathrooms at the moment.

Applejack brought the twins into the first stall in the mare’s bathroom and told them. "Look, Pinkie may have messed up earlier, but there's no reason to be scared of the toilet. I promise, you can’t go down the drain. Now, who wants to try it first?" When Pound reluctantly raised his hoof, she helped him onto the toilet. She pulled off his diaper and watched as he pushed out a mess.

Applejack nodded in approval, and after wiping him Pumpkin Cake blushed as she had her diaper removed. She sat down and squeaked as she pooped too, and Applejack nodded in approval again. She helped Pumpkin Cake wipe, and flushed the toilet.

The twins were afraid something would happen to them, something was going to pull them in and suck them down the drain! But nothing happened. The toilet emptied itself of its contents and refilled, ready for use again. “See, it’s not that difficult. As long as you pay attention to what you’re doin’, ya can’t get flushed. So, think ya two can try to use it from now on? At least until you go back to bein’ normal?”

The siblings smiled at each other and shouted. "Yeah, we can go potty in ta big potty!"

The farm mare breathed a sigh of relief. “Well, that’s one problem taken care of.” She put a hoof to her chin in thought. “Come to think of it, Granny says Zecora’s starting to get to that potty training age. I suppose maybe it can’t hurt to break out Apple Bloom’s old training potty, just as long as I keep Zecora from using it as her personal cauldron.” Well, she could worry about that once this whole foal crisis blew over.

Back in Canterlot, Twilight and Celestia both woke up to having their soggy diapers changed, which Twilight found most embarrassing. They then went back to their seats as the teacher cooed. "I hope you all had a nice nap. Tia and Twily, you two were the only ones who were unable to change your blocks colors. Why don’t you go and keep trying? I’m sure you’ll get it in time. It’s a little challenging at first, but with practice it should come easy."

Twilight and Celestia both groaned as they looked down at their blocks and continued trying. But Twilight could only manage to shoot some sparks out of her horn. Celestia didn’t fare much better.

Undeterred, the teacher continued her lesson about colors on the chalkboard in the hopes it might help her two new students figure out. But when she turned she heard many other students cry out. “Eww, it smells!" She gasped upon spinning around, seeing Twilight's pull-up was smelling, and sighed. "Twily, that’s enough, stop!”

Twilight blinked, opening her eyes and quickly become aware of her foul deed. She blushed bright red with shame as the smell began to fill the air. But the teacher simply replied. “Come with me, please, and you I’ll get you changed," Twilight whimpered but obeyed. And meanwhile, the teacher checked Celestia's diaper. It hadn’t gotten to the same point of Twilight’s, but it was still far from clean. "You need a change too, Tia. Come on."

She lead them into the bathroom and to the changing table again. This time the mare hoisted both fillies onto the table together with her magic and pinned a clothespin to her nostrils to block out the stench. As she went about changing their diapers she sweetly but sternly explained. "Look, don't take this the wrong way, but you two clearly need to be in diapers all day. I think your mommy might be rushing you into potty training before you’re fully ready. I also think you both should learn the very basics of magic. If you want to get into magic kindergarten someday, you have to be able to perform spells without having accidents: normal or magical."

Twilight kicked about in her new diaper and whined. "No, please! It’s not our fault we’re like this! We only had a couple of accidents!”

The teacher looked down at the filly and cooed. “I know, sweetheart, but that’s a couple too many. You and your sister just need some more time to learn, and that’s okay. Everypony learns at their own pace. Now, after you two are back in diapers, I’ll have you learn how to lift stuff with your horns.”

Twilight pouted as she plopped onto her diaper rump once the change was done, and Celestia simply blushed and gave a nod. “That’s fine, I guess.”

Twilight turned to Celestia and shouted. “Come on, Cel… er Tia! Ya can’t just have this teacher treat us like babies! We four years old!”

Celestia giggled with a smirk. “Yeah, but we also not really good at magic yet. We just made stinkies in our diapees.”

Twilight rolled her eyes. “Ya might not be good, but I read a book on magic called ‘Magic ABCs and 123s!’”

Celestia scoffed. “That book had nothing ta do with magic! Besides ya only know ya ABCs, ya dun know how to read yet.”

Twilight shouted back. “Ya wrong! I do know how to read! I can wook at ta pictures, that counts.”

Celestia shook her head. “Nah uh!”

Twilight shouted back. “Yeah huh!”

The teacher came over and scolded them. “You two stop that right now or your both going into timeout! You’re too old for those foalish arguments!”

The two fillies stopped fighting and gulped. “Okay.”

The teacher then gave a nod as she escorted the fillies back into the classroom.

Twilight blinked upon seeing that the desks were gone. And instead the school foals were sitting around in nothing but pull-ups, levitating toys with their horns and turning things different colors! Celestia and Twilight grumbled as they plopped down onto their diapers and looked over at their blue blocks, which were now made of foam. Twilight rubbed her head and asked. “Um, teacher wasn’t this Magic Preschool?”

The teach giggled and ruffled Twilight’s mane rather playfully. “Oh no, silly. This is magic daycare, now go on and try to levitate the foam blocks with your horns.”

Celestia eyed her foam block and grunted as she surrounded it with her horn and began to levitate it.

Twilight rubbed her mane and whispered. “Something is wrong about all tis. But what? I’ll ask Mommy Discord when she comes to pick us up. If she ever comes to pick us up that is.”

As Twilight and Celestia continued to try levitating their blocks, Applejack had finished teaching Pound and Pumpkin Cake how to use the big potty. Satisfied that everything had gone well. She then asked the twins. “Now, there’s somethin’ I think is worth askin’. Do ya two want to try goin’ ‘round without diapers on? You’ll be bottomless.”

The two both looked at each other with worried looks as Pumpkin shrugged. “Suwe, I dun mind. I wanna see wha is wike to be a gwown-up and not need diapees. But we should wawn each othew if we needs to go potty. And we gots to be suwe we use ta big potty and not the twaining potty. Tat’s fow wittew foaws.”

Pound Cake nodded. “Yeah, tats fine. If we just do ‘tiw evewting is back to nowmaw it be fine. But we bettew make suwe we monitow each othew so we dun have accidents. We dun have the cwowk diapees to hewp us anymowe.”

Applejack patted the twins heads. “Don’t worry, I have faith in ya two! And I know Pinkie Pie does as well,” She giggled. “Reckon now you can teach her how to use the big potty.”
“Good one, Appwejackie!” Pumpkin laughed. “If anyting, Pinkie teach us tat you no disappeaw if you go down the dwain!”

“Bu ya awso get smewwy and need to be wescued, so ya shouwdn’t get fwushed anyway.” Pound replied.

Applejack nodded. “Exactly! Now come on, let’s make sure the foals are okay. Then we’re goin’ back to Sugarcube Corner before anypony else sees all the foals!”

Later on, the group returned to Sugarcube Corner and were lead back to the nursery. Just before they entered, Pinkie gave the twins a hug. “I sowwy I made ya wowwy when I got fwushed. I didn’t mean to make ya even mowe scawed of ta big potty.”

“Is okay, Pinkie. Appwejackie teach us,” Pound explained. “And now we get to be diapeewess!”

Pumpkin added. “And wen this aww goes back to being nowmaw, we twy to wembew what we weawened so we can be potty twained!”

Pinkie beamed and sniffled. “You two awe gwoing up so fast. Bu I tink ya shoud stiww be in diapees, at weast when ya pawents awe awound. I tink they not weady fow ya to be potty twained so fast!”

“Tat fine, big sissy. But if we do tat you gotta weaw a diapee whiwe ya foawsit us!” Pumpkin declared.

The little filly nodded her head. “Is a deaw! But we can wowwy about tat aftew evewypony’s back ta nowmaw!”

Then the whole group entered the nursery. Everything seemed to be a lot better than it was when they had left. Except for the fact that Discord was now sitting where the fillies had been earlier, drinking a cup of tea. Applejack eyed him and asked. “So, ya finally came, huh Discord? You sure took your sweet time.”

Discord threw the cup away, making it disappear with a poof as he scoffed. “Can you blame me for enjoying the chaos? It’s what I live for, after all. And after Twilight told me about what happened here in Ponyville, I had to see things for myself. I gotta say I love this new Ponyville, it being run by foals would be quite fun.” He rubbed his paws together.

Applejack growled. “How about ya turn all these ponies to turn back to normal instead? You’ve had your fun.”

Discord chuckled. “Why would I do such a thing? Why would I want to spoil all my fun just when it’s finally getting good?”

Applejack stomped forward with a solid glare in his eyes. “Ya’d better return things to how they were, or I’ll get my friends to turn you back into stone again.”

Discord just laughed. “One of you is a little foal, another two are school aged fillies, and so is Celestia! I can do almost anything I want at this point!” Then he yawned. “But, I’m fair. I’m a spirit of a word. And I must admit I’m bored of watching everypony be so cute. So how about we make a deal?” The farm mare eyed Discord as he explained. “I made a deal with Twilight where I will turn all these ponies into adults again, and in return I’m simply going to turn Celestia and Luna into foals and she’ll have to care for them for a month. But I also know her friends will help out. So I want make a deal with you as well seeing as she’s busy in magic daycare.”

Applejack stomped a hoof on the ground and shouted. “Oh hay no! I’m not making any deals! Your gonna get Twilight back here and she’s gonna be an adult! No more games, Discord! Ponyville can’t be run by foals!”

Discord smirked, holding up some playing cards. “Sorry, but I have all the cards here and the only reason I’m doing this is because I’m bored. I have half a mind to walk away though, come back with a fresh hand and a whole new bag of tricks.”

Applejack looked down and growled, then sighed. “Fine, what’s the deal?”

Discord fluttered over with a smug grin. “I think I’ll regress you and the rest of your friends, just for a little while. Can’t risk them coming after me.”

Applejack reeled back and scoffed. “And just who’s gonna take care of us?!”

Discord pointed to Pound and Pumpkin Cake. “Why not these two? They look like they’re old enough. I hear they don’t really need diapers anymore.”

The Cake Twins both looked down and were unsure of what to say. Truth be told, they were feeling quite overwhelmed.

Suddenly, Pinkie Pie waddled over and babbled! “I’m ta one who did aww tis and is my fauwt. Change me into an aduwt and I’ww cawe fow my fwiends instead!”

Discord looked down and smirked. “Well, I do owe you for helping me, Pinkie Pie. But are you sure you can care for all those foals? Didn’t you already learn a lesson about not taking on more responsibility than you can handle?”

Pinkie looked up and babbled. “Yeah, I did! But I pwepawed, now! I pwobabwy desweve some chaos as punishment fow being so naughty. Besides, with Pumpkin cake and Pound Cake we gots wots of expewince, so tey gonna hewp me! So I say bwing it on!”

There was silence for a few minutes as Discord appeared to consider Pinkie’s request.

Then the spirit chuckled. “Alright then, you asked for it.” He proceeded to go about snapping his claw, and every foal in the nursery had magic tendrils wrap around them as they were transformed into adults. Some of them squeaked as their diapers were ripped open and others stumbled about, getting used to their bigger, natural adult bodies. A few even blushed upon seeing themselves surrounded by such infantile objects.

Pinkie Pie squeaked, growing up rapidly and seeing her mane poof out again along with her tail, a blush growing on her face.

Derpy and Dr. Whooves watched as the tendrils wrapped around their bodies too. But somehow, Derpy slipped and squeaked rolling under the tendrils. Dr. Whooves gasped as he grew older and was transformed into a full grown stallion! He looked down at his wife who was still a foal and picked her up.

For Applejack, however, the tendrils wrapped around her body as she regressed in age into a school foal, her hat now dropping down over her face as she growled. “You couwd at weast make my hat smawwer.”

Discord rolled his eyes and snapped a claw, Applejack seeing the hat poof to fit her size. “There, happy now?”

Applejack looked over her rump, seeing her cutie mark was no longer on her rump and instead was on a green colored saddle bag as she grumbled. “Not weawwy, bu whatevew. Ugh, I weawwy dun want my famiwy to see me wike tis!”

As the last few foals were turned back into adults they all quickly ran out of Sugarcube Corner in fright, not wanting to be around Discord for another minute! Discord sighed. “A simple ‘Thank You’ would’ve been nice,” Then he smirked, turning to Pinkie Pie. “Well now, I guess I’ll go find your friends and have them turned into foals as well. Hope you’re up to the challenge.”

Pinkie turned to see Dr. Whooves shouting. “You forgot to turn my wife back to normal! You need to change her back!”

Discord rolled his eyes. “That's not my problem. You two were debating who should be a foal again anyway, and I figured since you volunteered the first time you wouldn’t mind having the roles reversed. Besides, I'm on a schedule and I’m sure Pinkie Pie can add another foal to her list. You can help her if you like, or not, I don’t care either way.” Then he snapped a claw and disappeared in a puff of smoke.

Dr. Whooves growled. “Ugh! I swear i'm going to find a way to defeat that brute! He’s like nothing I’ve ever faced before, even the Daleks look tame compared to him,” Then the stallion turned to Pinkie and asked. “So...um...I guess you’re going to be caring for my wife?” When Pinkie nodded he added. “Well, I should stay and help, seeing as you’re going to have your hooves full. I’ll make more of those special clock diapers.”

Pinkie just sighed. “That’s fine, I’m going to need all the help I can get.”

Both Pumpkin and Pound Cake then came over as Pumpkin offered. “Hey, we can hewp fow a witwwe bit, wight? Is onwy a month.”

Pound nodded. “Wight. Besides, we gots of expewience in foawsitting, and we somewhat potty trained now!” They both turned to see Hoity Toity and Blueblood still playing together happily, without a care in the world.

Pinke smiled as she felt something overcome her and she exclaimed. “Yeah, you guys are right. Having all these foals around is going to be fun!” But then she stopped and gulped as she whimpered. “Now I need to figure out how to explain all of this when Mr. and Mrs Cake. come back! They’re never going to believe any of this.”