Helping a friend (doesn't always turn out how you expected) [private for Matt and I]
 

Twilight Sparkle was always one to help her friends. She was on her way over to Fluttershy's cottage, where Rainbow Dash had moved in as well. The couple had been together for several years and they had asked Twilight for a bit of help. Without any further explanation, she agreed to meet them over there in a week.

Fluttershy and Rainbow has been married for couple months now and decided to do the next big thing and they needed Twilight's help. "Yo, what's up, egghead?" said Rainbow answering the door and seeing Twilight there.

"You asked for my help? What'd you need?" SHe asked, not sure as to what the problem was. "I mean you're doing fine aren't you? I would hope there's no serious problem."

"Everything is fine... It's just... come in a we'll talk." Rainbow let Twilight in and they took a seat at the couch. "You see, Twi. Flutters and I have been thinking maybe we should get a, yknow, a foal..."

"Well that's a wonderful idea. I know you'll both be great parents. Especially you Fluttershy. I know you'll love her properly. But I still don't see where the issue is here. Do you have any concerns? Afraid you won't know what to do?"

"That's the thing, Twi," replied Rainbow as Fluttershy nodded. They both held each other's hand and snuggled up with each other. "We're not sure if we could be able to take care of a foal. Even Fluttershy."

"Well you should practice! Practice makes perfect after all!" She said happily. "I mean I'd offer to help but I'm not exactly a foal now am I?" She replied laughing a bit, though not aware she gave them an idea.

Rainbow Dash started to smirk at what Twilight had said. "You know, that might not be such a bad idea," she remarked.

"What is, sweetie?" Fluttershy asked a little confused.

"I mean with you Twilight. You can, like, pretend to be our foal and stuff," she said. "You've read a lot of books on taking care of foals I bet. You can teach us along the way!"

"Whoa whoa hey now! I'm not going to be a foal. Plus age spells are hard! I've only mastered down to about the age the crusaders are!" She replied, blushing quite a bit. "Plus wouldn't that involve diapers?"

"You wouldn't have to change your age, Twi," Rainbow Dash remarked. "And of course we'll use diapers, duh."

"I wouldn't exactly feel comfortable being a full grown mare in diapers you two." She responded, unwillingly agreeing to wear diapers for her friends.

Fluttershy picked up on that. "So you're saying you'll wear diapers and be our little filly? Oh excellent!"

Twilight's mouth hung open. She had just agreed to this.

"Oh come on, Twi! You'll really be helping us prepare," Rainbow Dash remarked.

Twilight whined. "But why me? Why not Pinkie? She's always up for crazy stuff like this!" She pleaded, though Fluttershy was already hugging her as if she was her foal. She sighed. Once Fluttershy was like this she had lost. "F-fine. I'm not going to be a mare though. You're getting a filly. And I'm not getting any of the supplies, that's all on you two."

(I'm not really a fan of age regression.)

"Actually, Twilight. We already bought foal supplies," Fluttershy said letting her go for a moment. "They upstairs in the nursery we made."

(Well you just pretty much prevented her from doing that :P )

Twilight gulped. "Y-you already bought it for a full grown mare didn't you?" She had just been outsmarted. She couldn't believe it. "So I'm pretty much out of options here aren't I?"

"Oh, not the adult diapers yet," Fluttershy stated. "Rainbow, how about you run to the store real quick and I'll show Twily the nursery?"

"You got it, babe." Dash kissed her cheek and went out to get the diapers. "I'll be back as soon as you know it."

Twilight had accepted her fate. "Can I at least have a say in what we do Fluttershy?" She asked.

"Well, you know a lot of stuff about caretaking from all those books, right?" Fluttershy stated. "While we baby, you help us along the way."

"Well I know more about caretaking from looking after Spike and foalsitting the twins on occasion." Twilight replied, following Fluttershy.

"See? You can be a great help!" The two entered the nursery and Fluttershy showed her around. Showing the chest of toys, changing table, crib, etc.

Twilight was amazed. All of this was a full grown pony and not a filly or foal. They had planned on this. "S-so this is my room then huh?"

(I don't want Flutters and RD to be devious like that. The stuff are for foals.)

"Uh-huh, this is will you stay for the meantime," Fluttershy informed her.

(It was enlarged via magic. Well the crib and the changing table have to fit a grown mare ya know.)

"Is the crib properly made? There's got to be a certain mattress for the foal or certain issues can arise." Twilight replied.

"You think you can use some magic to fix this then?" Fluttershy asked.

"Like what?" Twilight asked. "I mean a lot this stuff isn't exactly fit for a grown mare."

"You know, like make them bigger for your size," Fluttershy suggested.

Twilight sighed and then her eyes glowed and the chosen furniture was magically enlarged. "There, happy? When's Rainbow getting back anyway?"

Fluttershy looked at her watch. "Right about..."

"I'm home!" Rainbow said out loud walking in the house and upstairs. "I got those diapers!"

Twilight cringed at that. Diapers. HER diapers. She had to wear them. She sighed. She couldn't abandon her friends, especially when they wanted a foal of their own. That wasn't friendship. She climbed up on the changing table to accept her fate.

Fluttershy came up to Twilight and started off removing Twilight's pants and panties. The shy mare couldn't help but blush at the sight. She grabbed a diaper, slid it under her butt, powder her crotch area bit and diapered her up.

Twilight was trying to remain calm throughout the diapering process. She hadn't ever had someone remove her panties like that. Pants was a different story since Pinkie loved to prank anyone. After it was taped up she sat up and stared at it. "Well this certainly feels awkward. So what are the rules?"

"The first rule is obvious, you have to use the diapee whenever you have the urge to go," stated Rainbow. "Number two, you must guide through this whole experience so we can learn."

"Wait I have to use the diapers? What? Why?" Twilight asked, not a fan of being dirty like that.

"Duh, how else are we suppose to learn to change a diaper?" Rainbow asked with a light chuckle. "Rule number three, you shall address us as mommy to Fluttershy and mama to me."

"Why do I have to do that? I mean I'm just supposed to be helping you through this aren't I?" Twilight asked confused.

"It's to get into character, dummy. Shesh, use your head, Twi," said Rainbow as Fluttershy removed Twilight's shirt and bra to fit in the baby role.

Twilight covered her modest B cup breasts. "F-Fluttershy! Give me back my shirt!" She whined, sitting naked except for a diaper. The only person supposed to see her naked was Cadance wand that was years ago!

"Sorry, Twilight. But before we can buy bigger clothes, you'll just have to go like that," Fluttershy imformed. She turned to Rainbow. "Maybe I should've ask you to buy that when you were at the store."

Twilight took her tshirt back and pulled it over her head. "I'm keeping my tshirt on. Cadance says I'm not supposed to show my breasts to anyone but my significant other and my doctor. A-and I'm kinda self conscious..."

"Alright fine, seems fair." Rainbow helped Twilight off the changing table. "So do you understand the rules?"