Mommy Twily

by Soul Shine

Rating: mature
Tags: Slice of Life, Twilight Sparkle, My Little Pony: Friendship is Magic, Rarity, Romance, Fluttershy, Porn, Sex, Fetish, Profanity
Length: 1789

Fluttershy and Rarity have both been in diapers for awhile now, but now they need a new mommy...

Ever since Fluttershy got her Mommy, Rarity, in diapers, the two little fillies have been one short of a mommy. In need of a pony to watch over them, Fluttershy asks their good friend, Twilight Sparkle to be their new Mommy.

What misadventures will Twily and her two precious foals get into? More importantly, what kinky shenanigans will Fluttershy and her marefriend get into while their Mommy isn't watching? Stay tuned to find out.

Trigger Warning: Involves vivid descriptions of sexual activities, age play, clop, diapers and the usage thereof enter at your own risk

Published 2019-03-07 01:20:02 UTC
Last updated 2019-03-07 01:20:02 UTC

New Mommy! Yay!

Author's Note

This has been long in the making, but I am now pleased to present "Mommy Twily", Naughty Fluttershy 2
This story will have many chapters, hopefully more than the first one, considering I have an actual plot pre-written for this one. On the first one I improvised.

Anyways, Enjoy Chapter 1!

New Mommy! Yay!

"Um... Wha~" was all Twilight could muster as she stepped into the homely cottage. Who wouldn't be wordless? Two of her best friends were in her face as soon as she stepped through the door. But what really set her off were the strange garments around their waists. They almost looked like... "Wait... Are you wearing... Diapers?"

"Um... Well yes..." Fluttershy said simply

"But darling, she always wears them," Rarity explains, "Why do you think she's always wearing dresses anymore?"

"I'm incontinent..." Fluttershy continues, "so I kinda need to wear these."

"I'm helping her potty train though. I only wear them because I recently found out that I quite enjoy them, as icky as they may be."

Twilight just made a condescending face at the two diapered ponies. "Why the buck are you telling me this? This sounds really personal, and kind of weird..."

"Well see darling, at first, when I decided to start wearing diapers, I thought me and Fluttershy would just change eachother," Rarity reasoned, "but see, Fluttershy... Has never changed herself... She's really bad at it, no offense sweetie. Just look at this!" Rarity exclaims, gesturing to her loosely fitted diaper. "So Twilight, if you aren't busy, we would like you to be our new Mommy and I can just be Fluttershy's little sister. Yes I know, she seems like the younger one, but she's in potty training, I'm not, so..."

"What? You want me to take care of you like foals?" Twilight said, looking confused. "I suppose it wouldn't be the strangest thing I've done. And clearly this is sexual, and I feel flattered that you'd involve me in it. Also, you two kinda look cute..." Fluttershy looks up from suckling her pacifier at this, blushing slightly. "Okay sure, why not?"

"W-Weawy Mommy?!" Fluttershy says excitedly. Twilight blushed at being talked to like this.

"Of course, what are friends for? But Rarity, you should try to act younger. How old are you supposed to be anyways?"

"One and a hawf!" she answers foalishly, "Fwuttershy twee!"

"She's a tree?" Twilight jokes, surprised at Rarities babyish voice.

"No, she's thwee!" Rarity says stomping her hoof in frustration.

"Okay then," she says giggling, "so Fluttershy, how far are you with the potty?"

"Um... Not vewy far... I stiw mess mysewf sometimes and I awmost ahways wet da bed..." Fluttershy admits blushing.

"That's fine, Mommy can help!" Twilight says. "Now I think you'll find I can change diapers just fine, I imagine it's just like changing Flurry Heart. "Do you have a changing mat or something? Where do you keep the diapers?"

"Oh! Fowwow me Twiwy!" Fluttershy says, leading her down the hall to their special nursery. Most things have stayed the same, but they didn't bother investing in a second crib. Fluttershy and Rarity just slept in the one crib.

"This is adorable!" Twilight exclaims, "It looks just like a foal's nursery!"

Fluttershy gestures to the changing table. "My diapers are in the left drawers, Rarity's are on the right." Twilight uses her magic and levitates a thick white diaper with purple leak guards and a Pull-up with butterflies on it. "um, under the Pull-ups are thicker ones. Like I said, I still mess myself quite abit, so I might not be ready for the pull-ups yet. But you're our mommy, so it's up to you really..."

"Oh yeah, I'll wait 'till I get you on the potty to put you in Pull-ups for sure."

"Thanks Mommy..." Fluttershy blushes.

Rarity leans into the room looking nervous. "Um... Big sissy? I..." but Fluttershy can already smell it. However, it wasn't Fluttershy who took charge.

Twilight picks up Rarity with her magic. "I only expected it sweetie." Twilight sets Rarity on the changing table and changes her in record time. "No more asking your sister. That diaper was really loose, it could've leaked. That's foalcare 101! From now on you ask me. And only your big sis has access to the big girl potty, okay?"

"Yes Mommy..." Rarity submits.

Twilight presses a hoof into the back of Fluttershy's diaper. "You're wet too, honey bunch, hehe~"

Fluttershy blushes. "Oopsies..."

"Tell you what, how about Mommy changes you, feeds you both, then sets you off to bed?"

"That sounds nice~" Both Fluttershy and Rarity say in unison.

While Fluttershy is being changed, she chimes in. "You're really good at this. Most ponies would be as lost as Rarity was when we started dating... She had no idea how to even change me. She bought this book and everything cuz I had no clue. There was always a friend to help... Not you and the girls but fillyhood friends, or people who wouldn't mind. Tree Hugger changed me for awhile. Then again that was when she and I were together." Fluttershy suddenly ceased her monologue to notice Twilight putting Fluttershy in one of the pink Pull-ups. "M-Mommy I don't think that's a good idea..."

"Relax baby, I figure you'll have another accident before bed. I want you to go to bed dry, and at the same time I don't want to waste a perfectly good diaper. You'll only need the Pull-ups, okay?"

"um... Okay..." Fluttershy says reluctantly. "I-It just feels kinda surreal, I'm so used to having that extra bulk between my legs..."

"Well then you might as well get used to it. Soon enough you won't even need those pull-ups," Twilight says as she picks up Fluttershy with her magic and sets her down. "Try to keep those dry. They could probably only hold a small accident before they give."

Fluttershy blushes. "O-okay Twilight, I'll try..."

"Call me Mommy sweetheart," Twilight corrects.

Twilight picks up Rarity with her magic. "Now let's get you two fed"

The two fillies follow Twilight into Fluttershy's kitchen. Fluttershy was so excited. She hadn't eaten that day so she was starving. However, her heart sank once she saw Twilight putting Rarity in her highchair.

"um... Mommy, t-that's my highchair..." Fluttershy stuttered.

"What? Aren't you three? You can feed yourself can't you?" Twilight counters

"Well... technically... B-but I like being fed, and... Rarity usually feeds herself..."

"Yes, I highly doubt I need this treatment just because I'm the younger sibling," Rarity chimes in.

"Fine Fluttershy, I'll feed you after I finish with Rarity here, there's only one high chair."

"I can feed myself darli—" Rarity started to say before a large pacifier nipple shut her up. "Mmm!" She struggled to spit it out but ended up suckling it, blushing as she did.

"But I want fed now! Dat my highchair!" As she said this, she could hardly notice the tears rolling down her face, pitter-pattering against the hardwood flooring of the cottage. And neither had she noticed the warmth which spread throughout the padding of her pull-ups, the wetness indicators fading away.

"Fluttershy, you're being bratty. After I feed you two, you've earned yourself a punishment. When we're done with that, you will go straight to bed."

"But I'M THE FOAL!!!" Fluttershy cried.

"Are you asking for more punishment? You've already lost your desert and bathroom rights for a today. Try to push your luck."

Fluttershy backed away, submissively. "Otay mommy..."

Rarity had finally managed to spit out the pacifier. "I can feed myself!"

"No arguments or you won't get desert either," Twilight warned. She opened up a foal food jar labeled "banana purée" and offered a spoonful to the waiting filly.

"Hey! Dat's my foal food!" Fluttershy yelled, her eyes still filled with tears, her pull-ups with urine.

"Yeah, I never eat that stuff. I'd much prefer a salad or something more Rarity." The pony in the foal chair adds.

"You know what, fine. Fluttershy, you can use your highchair, and I'll feed you. Rarity won't get dinner." Twilight swiftly swaps the position of the two mares and shoves a spoonful of foal food into Fluttershy's mouth.

"Yay! Thanks Mommy, it's delicious," Fluttershy sighs in delite, shooting her marefriend a snarky death-stare, as she mouthed "I'm the foal!"

Once the tantrum-throwing Fluttershy finished her food, Twilight ran them both upstairs.

"Okay Fluttershy," Twilight explained as she gestured to a lone chair in the corner, "Go in time out, I need to give Rarity a little talk. And no moving from that spot!" Despite Fluttershy's protests, she ended up doing exactly as she was told.

Twilight left the room with Rarity in tow. Once she knew they were both out of earshot, she spoke up. "Okay Rarity, I know this isn't how big sis would treat you, but I'm your Mommy now, so you better learn to live under my rules. I'm not joking, you aren't getting dinner tonight. If I tell you what you're gonna eat, it's that or nothing at all. Got it?"

"Fine..." Rarity submitted, only to be shocked by a hoof getting shoved against her sensitive regions.

"You're soaked! I guess it's a good thing you aren't getting desert. I had bottles of Flurry Heart's favorite formula all ready at the castle for the both of you. But I can't have you leaking, can I?"

Rarity blushed, embarrassed by the accident she, strangely enough, didn't remember making. "It was an just an accident..."

"Well, accident or not, I think it's time we change your little diaper, hm?" Twilight teased as she led Rarity by her hoof into Fluttershy's nursery, where Fluttershy sat in the corner with a strained face.

"Aaah~ oh sweet Celestia~" Fluttershy sighed as relief washed over her face and a stench filled the room.

"Um... little Fluttershy, did you..."

Fluttershy was startled. She wasn't aware that she was being watched. "W-Well... You s-said I wasn't allowed to move, a-and I had to... Um..."

"It's alright. I was about to change your little sis. Why don't we change you both and send you off to bed?"

"O-Otay Mommy..." Fluttershy said.

After changing their newly wet and messy diapers, and putting the two in thicker overnight diapers, Twilight got them dressed into two footed sleepers. Lavender for Rarity, Pink for Fluttershy. They each had a flap at the crotch that would make the inevitable morning change much easier. After this, Twilight lowered them into the large, oversized foal crib, not forgetting their pacifiers of course.

"Goodnight my little ponies..." She whispered, as she turned off the light, switched on the nightlight, and quietly exited the room, ready to get some alone time.