Shiny vs Sunny

Shining Armor and Sunburst both sat in their nursery, building with blocks and waiting patiently. They were back in pull-ups, but were still required to tell a grown-up when they had to use the bathroom (as the toilet had not been brought back just yet, Cadence was understandably reluctant after the close call Shining had had at the museum).

The two colts were playing and trying to build a tower together, but they were dreadfully nervous as they waited patiently for Twilight. Sunburst sighed. “So, you ready to see your sissy?”

Shining Armor shook his head and grumbled. “I can only hope she’s too busy with princess stuff. I dun wanna be the little sibling in potty training, she gonna tease me to no end.”

Sunburst looked up and asked. “So...how bad do you think she’s gonna have, you know ‘Mommy Fever’? Do ya think it’s contagious? Celestia and Luna seemed to have it.”

Shining placed another block on the fast growing tower and sighed. “I hope not… I really dun wanna know what Twilight would do if she got Mommy Fever. But I bet it’d involve books on foal care, in this case potty training.”

But just then the nursery doors burst open and Twilight came rushing in with her wings spread out and a big smile on her face! She came up to the playpen and eagerly shouted! “Oh little brother, it’s so good to see you! You’re so adorable!” Twilight then lifted Shining Armor into her magi, and pulled him into a big hug. Twilight nuzzled the little colt and patted his pull-up as he squirmed about shouting “Twily! Put me down! I scared of heights!”

The now older sibling eventually did, before she turned her attention to Sunburst. She bent down to his level and poked his chubby belly as she cooed. “Ooh, look at you, Sunny. You’re just so adorable and chubby, what a cutie! I wish I’d brought Starlight here so she could see you like this.”

Sunburst kicked his chubby legs about and giggled. “Stop that, it tickles.”

Twilight cooed. “Oh, it does does it? Well then, guess I’m the tickle monster!” She proceeded to tickle his tummy with a wing, making the little colt roll on the floor laughing until a loud hiss could be heard. Twilight gasped as the front of Sunburst’s pull-up grew yellow, and she quickly apologized. “Oh my gosh, Sunburst, I’m sorry! I didn’t mean for you to pee yourself!”

Sunburst groaned. “Ugh, seriously? I was going good with no accidents! Now Cadence is gonna keep me in pull-ups even longer, I’m gonna be stuck in potty training forever!”

Twilight apologized. “I’m sorry, Sunburst. How about I change you really quick and this will just be our little secret? Just make sure you don’t have anymore accidents.”

Sunburst got up and chirped. “Yeah, that's okay! I probably should’ve said something sooner anyway, I old enough to know what makes me go.”

“Ooh, such a good role model,” Twilight chirped as she scooped up Sunburst and carried him to the changing table. “Flurry Heart and Fizzlepop could learn a lot from you, and Shining too.”

Shining pouted as he watched Sunburst be changed. “Hey! I didn’t pee pee myself like Sunburst did! I’m doing good too!”

“That why I was in pull-ups first?” Sunburst taunted as he stuck his tongue out. “You needed help from Crystal Shard to use the potty, and you got in trouble for it.”

“Only because the seat was so slippery.” Shining retorted and crossed his legs in an adorable pout.

Sunburst was quickly changed by Twilight, who moved quick as a flash. She’d foalsat the Cake Twins a few times while they were in the pull-ups phase (and sometimes they still needed diapers at night) so she was no slouch. Soon, Sunburst was in a clean pull-up and set back down. “Anyways, what do you have planned, Twilight?” He nervously asked even though a part of him was afraid to find out.

Twilight clapped her hooves together. “Oh, just you two wait! I have some fun activities planned for the two of you!” She then took out a big blue book with some letters, shapes, and colors printed on it. “I'm going to see how much you two learned in preschool!” She told them.

The colts both blushed, this would surely be an embarrassing experience.

“Now before we begin, you don’t need to use the potty, Shining. Or do you?” Twilight inquired. “Wouldn’t want you to have an accident like Sunburst did.”

Shining protested with a shake of his head. “Nope, I good, Twily. I’ll let ya know if I have to go. I not afraid.”

Twilight adopted a teasing smirk. “Really? Not even of the potty monster? I hear he just loves foals your age.”

“There’s no such thing as the potty monster, Twily!” Shining growled. Under his breath he added. “Though you can go down the drain if you’re not careful or just really curious.” Fortunately, nopony heard the added detail. His secret sewer adventure with Crystal Shard was still a secret, for now. And he intended to keep it that way.

Twilight simply giggled. “Ah, and here I was hoping to get a little payback for you making me afraid of ladybugs.”

“Like you never messed with me when we were growing up?” Shining complained. “I swear, even Flurry Heart’s better behaved than you.”

The young alicorn just laughed. “That’s not what I hear from Cadence. Apparently, you’re the trouble maker. She told me all about your little escapades at Spike Land, including you and Crystal Shard’s secret bathroom visit.”

Shining sighed and pouted. Somehow, the regressed prince felt for sure he was never going to live his foalish adventure at the pizza place down, especially when he’d been forced to do his patented diaper dance.

The two foals that were almost grad school age were taken from the nursery, their pull-ups crinkly a little but not as much as their diapers. They were brought to another room that Twilight had arranged to resemble a makeshift classroom, sort of like the ones at her school back in Ponyville.

“Let’s see how much your foalish tendencies still linger.” Twilight commented and set them on the classroom floor.

The first test featured two wooden boxes with different shaped holes. Shining and Sunburst had the boxes placed in front of them as Twilight turned around with a timer. “Alright, now the first colt to place all their shaped blocks into the box wins. Ready...set...go!”

The two colts began to shove the shapes into the holes, each trying to be the first to complete the task. They went at it as both Shining and Sunburst struggled to get the shapes into the boxes for some reason.

Sunburst scratched his head upon seeing that his star block was not fitting into the triangle hole. He turned to see Shining, who was trying to fit an oval shape into the circle hole as he whined. “This is crazy! Why doesn't it fit?! An oval’s a flat circle!”

Sunburst giggled as he looked down and gasped in realization. “Oh, this is a star shape. What was I thinking?” He put the star shape aside for the time being, then turned to see the triangle shape nearby and he picked it up and placed it into the box. “There, one down!”

Shining frantically looked up, and then back at his oval piece and blushed as he picked it up and placed it into the oval hole. Twilight giggled and congratulated her little brother. “Good job, Shiny. That’s the way to do it!”

Shining continued to place the shapes in the holes for a bit, but then he picked up a square and struggled to place it into a rectangle shape hole.

Sunburst, meanwhile, was on his last piece, watching as Shining struggled with trying to place his last cube. Sunburst then looked down at the diamond shape in his hooves and realized that he himself had been struggling to try to place it into a square hole. He giggled as he found the right spot.

Shining looked over and gasped. “Oh look, I got a square! Squares and rectangles aren’t the same!” He quickly found the square hole and placed the shape into the hole just as Sunburst did the same with his diamond shape at what appeared to be the same time. They both rose up, shouting at the same time! “I did it! I won!”

Twilight clapped her hooves together and giggled. “Oh, you both did very well. It was a tie! Lucky for the both of you, there are more tests where those came from,” She then got out the next test. She took out a few tubs of hoof paint, a red tub, a yellow tub and a blue tub and instructed them. “Now let’s see how well you remember your color mixes. Place a hoof in the two colors needed to make purple.”

Shining rolled his eyes as he waddled over. “This’ll be easy!” He declared and placed a hoof into the blue paint then the yellow paint. He started to mix them together as the paints turned green. Sunburst burst into laughter as Twilight blushed and cooed. “That was a good try, Shining. But we weren’t looking for green.”

Shining stepped back and whined. “I forgot what made purple!”

Sunburst then strutted over and mixed blue and red paint, turning it purple as he replied to Shining. “See, that's how ya make purple, silly! You should know that, your sister has a purple coat.”

Twilight giggled as she asked. “Now, who can make orange?”

Sunburst smirked as he dipped red and yellow together and turned it into an orange paint. Shining whined. “No fair, I didn't even get a chance! Of course Sunburst knows more, he got out of diapers first!”

Twilight turned to Shining and asked. “Okay then, Shining, this one’s for you. What is the color of your fur?”

Shining Armor looked down and blushed. He had to think a little before shouting. “Its white, like snow or a diaper!”

Twilight smirked. “Correct. Now for a real challenge, try mixing white and blue. See if you can figure out where the white comes from.”

Shining then placed a hoof and shoved blue all over his fur, squealing with delight as Sunburst growled. “Hey, that's not fair! He has white fur! He’s like a canvas!”

But Twilight turned around and asked Sunburst. “Well, how about you try painting yourself? Just don’t get paint into your pull-up or on the walls, Cadence won’t like that.”

Sunburst turned to the paints, eager to try out fur painting. Shining made it look so fun and easy. He picked up the red and yellow paints and started to smear them into his fur and mane, making it more orange. He squealed in delight! “Yay, I'm a sun!”

Shining turned around and proclaimed. “Oh yeah?! I'm like a big blue sky that the sun and the moon are part of!”

Twilight dawwed as she used her magic to summon up some sponges and buckets of water to quickly clean the two, then placed the paint away. “Okay. You’re both doing quite well so far. Now it’s time for the last little test of mine. It involves letters,” She then pulled the big foam book out from her saddlebags and showed them a letter. It looked pretty funny, it had a long line and a strange circle on the top. “What's this letter?” She asked.

The two colts both grumbled, seeming to have forgotten. But Sunburst suddenly rose up and shouted. “That's the letter P, like for potty!”

Shining poked Sunburst pull-up. “Or Piddle Pants, considering you couldn’t hold yourself when Twily tickled you.”

Sunburst growled and turned towards Shining. “Oh yeah?! You’re the piddle pants, Shining, you still wet the bed!”

“I didn’t do it last night, Sunburst! I stayed dry!” Shining boasted.

The little colt became furious upon hearing that. He’d stayed dry too, but Cadence had showered praise on Shining for also going poop. Sunburst hadn’t done anything all night and hadn’t even needed to wake up for the potty, but he’d gotten nowhere near the same level of praise from Cadence. “I was the first one to graduate to pull-ups! I’m the one who never wet the bed!” He thought in his head, and those thoughts boiled over inside him as he shoved Shining down onto his pull-up. “You’re a poopy head, Shining! I oughta give you a royal flush!”

Shining toppled over from Sunburst’s attack. Helpless to get back up her cried and pouted. “Why you being such a meanie pants, Sunburst?!” He complained as tears started flowing from his cheeks. Then he tried to push back against Sunburst. “You’re the one who deserves a royal flush, and maybe a spanking too!”

Twilight quickly came over and separated the two with her magic, breaking up the fight as she scolded them. “That's quite enough of that! There will be no flushing or spanking on my watch, young stallions! You’re better than this, you’re supposed to be serving as role models for the real little ones for Celestia’s sake. Now you two behave right now, or I'm going to put you both in timeout! Do I make myself clear?”

Both colts stopped instantly and plopped down on their pull-ups. “Yes, Twilight. We’ll behave.” They promised, opting for a regular promise so as to avoid making Pinkie Pie appear. She was the last pony they wanted finding out about this.

Twilight, satisfied that she had gotten the little colts to behave, turned the page. It showed a picture of a plain, white diaper. “This is a diaper,” She spoke in her best teaching tone of voice. “Can anypony tell me what the first letter in the word is? Don’t be shy, this isn’t a test. You won’t lose points for a wrong answer.”

The two colts both looked at each other. While they no longer felt the need to compete directly with each other, they were still unsure of the answer. Even though they’d been in diapers and had just gotten out of them for good the previous night, they couldn’t think of all the letters that spelt it out.

Shining eventually plucked up courage and shouted. “Um… is B!” He squeaked as suddenly and without warning, his pull-up turned into a poofy diaper as Twilight giggled. “Nope, good try though, Shining. Don’t worry, you’ll get your pull-up back eventually.”

Shining blushed as Sunburst giggled and then said to Twilight. “Uh is the first letter...umm...E? I swear there’s an E in there!” Then he squealed as his pull-up too was turned into a diaper equally as poofy. The colt groaned, looking down at the thick diaper.

Shining then turned around. “Wait, Sunburst, what make ta ‘Duh’ sound again?”

Sunburst tapped a hoof to his chin, then proclaimed. “Oh, wasn't it D?!”

Twilight rose up, clapping her hooves together. “Yes, that's correct! Well done, Sunburst! And you too, Shining! Nice to see you boys cooperating for a change,” She then gave each foal a kiss on the forehead. “You two are quite smart for your age, I’m glad the spell didn’t take away your memories or your knowledge. But now it’s time for the final page. Get ready, this one’s a doozy!” She flipped the page, showing a picture of a chubby earth pony foal, and asked. “Now then, can you boys spell foal?”

Both colts tapped their hoof on their chins as they turned around and talked to each other. They were deep in thought for a while.

Shining eventually turned around and told Twilight. “Well F makes the ‘fff’ sound. So the first letter is F!”

The little colts watched as the letter F was placed onto the front of the picture. Sunburst then shouted. “The next letter is O, that makes the ‘ooo’ sound!”

Shining Armor turned to Sunburst who nodded, and then he said to Twilight. “I think there's another O somewhere?” He squeaked as he was poofed into a cute blue onesie.

“Sorry, Shining, there’s only one O in foal.” Twilight apologized with a shake of her head.

Sunburst giggled as he turned around and said to Twilight “I think there could be a U, right?” He squealed as an orange colored onesie was poofed around his body. “Oh no!” He exclaimed, more in embarrassment than actual horror.

Twilight giggled. “Not quite! Try again, you’re almost there.”

Shining grumbled as he teetered back and forth on his onesie before he replied. “Well...the next letter could be... A, I think?” When it appeared beside the other correct letters he breathed a sigh of relief, the little prince didn’t want to think what would’ve happened if he’d gotten it wrong again.

Sunburst was equally frightened by this prospect, so he was very reluctantly in answering. “Well, the last letter is... L, right? Please tell me I’m right!” Sure enough, the L appeared beside the F, O, and A! The word had been spelled out entirely!

Twilight stood up and clapped her hooves. “Well done, you two have officially passed Twilight's Preschool! Just as I expected, your memories haven’t been compromised by the spell. You may act more foalish, but you still remember your ABCs, shapes, and colors.”

Shining Armor, meanwhile looked down at his onesie and diaper with an embarrassed look and asked his sister. “Um…Twily, why did you dress us up as babies again? We’re not this little.”

Twilight hugged the two and nuzzled them. “Because I didn't get to see you two when you were regressed to foals, and no way could I miss the opportunity! I promise I’ll change you back to normal and let you use the potty, but for now just let Auntie Twily take care of you two for the rest of the day!” She then skipped down the hall with the two foals on her back. “Oh, it’s so great to be the big sister for a change!”

Shining and Sunburst simply groaned, wondering what they had done to warrant this kind of humiliation.