Rainbow's Foalish Fantasy

Rainbow awoke in the middle of the night, her stuffed animal held securely right up against her chin. She was still suckling away at her pacifier, and she could feel a comforting warmth coming from her rear. Even though her eyes were still closed, she instantly recognized the feeling of a warm, wet diaper. Rainbow smiled as she snuggled closer to Twilight, sincerely grateful that their relationship had gotten to the point where she could reveal her most deepest secret and not be judged for it. That meant the world and more to her, and it made her wonder if Twilight had any fantasies that she’d like to live out. She knew that if she had any, she’d be more than happy to help her, just like what she was doing for her right now.

Dashie rolled over, pressing her back up against Twilight’s side, still staying under her warm wing. One of her hooves brushed against one of Twilight’s breasts, and she frowned, because it felt like they had grown in size. Cracking her eyes open, she gently crawled out from under Twilight’s wing and felt her way along in the dark.

Her snout mere inches away from Twilight’s breasts, Rainbow extended a hoof and carefully prodded it, pulling her hoof back with a surprised squeak. Her mama's orbs were definitely much bigger than earlier, and she licked her lips hungrily as she felt her stomach grumble. Her padded rear wiggling in excitement, Dashie leaned forward and took the first teat into her mouth and started sucking, humming happily as she got the familiar and reassuring taste of Twilight’s milk. This time, the milk tasted a little bit different, a bit sweeter to be exact. She didn't pay it any mind though, for she loved how it tasted now.

It took her four or so minutes until that teat ran dry. Dashie released it and licked her lips, letting out a soft burp a moment later. Rolling onto her side, she took the other teat into her mouth and sucked hard, trying to get the flow started. A few moments passed in silence before she got what she wanted, and it took her about the same time to finish off that teat.

Her stomach now full of Twilight’s warm milk, she slid back under the alicorn’s wing and curled up under it. She pulled the diaper up a little bit just to make sure that it wouldn't slip off in the middle of the night. Dashie checked the tapes and saw that all four were still secure, so she grabbed the pacifier and popped it back into her mouth. She turned around, laying her head near Twilight’s bountiful swollen orbs and smiled as she felt the diaper become just a little warmer as she drifted off to sleep, just like a good little foal would.

Dashie woke up when she felt Twilight stir in her sleep. She could tell it was morning from the amount of light shining through the basement door at the top of the steps, and that gave her just enough light to look around. Everything was as they had left it last night, but it all seemed bigger for some odd reason. She shrugged, chalking it up to the fact that she laying on the ground, looking up at everything. Of course everything’s gonna seem bigger when you look at it from below… Dashie thought as she rolled over, struggling to push Twilight’s wing off of her. She was getting a little too warm, and her stomach grumbled in hunger again. Licking her lips, Dashie noticed that her pacifier was missing. She felt around for it with her forelegs unsuccessfully. Giving up, she tried to push Twilight’s wing off of her like she had done in the middle of the night, but she still couldn’t do so.

It took her a minute to wiggle out from under Twilight’s wing, and she found her muzzle right in front of Twilight’s breasts. She couldn’t believe her eyes. The orbs were noticeably bigger than last night, jiggling with every little twitch from Twilight. Dashie didn’t want to keep her hungry stomach waiting, so she wrapped her lips around the lower teat and started sucking, closing her eyes as the soothing rhythm threatened to lull her back to sleep again. She fought off the feelings though, and when the teat started to run dry, Dashie switched teats, moving to the top one. Much like she had done last night, she repeated the process with that teat and sat back with a full stomach.

Dashie started to feel a little cold; her wings weren’t doing much to keep her warm. The blanket that they’d fallen asleep with was nowhere to be found. Seeing that Twilight’s wing was still extended, she turned and started to slide back to get under it. She stopped as she felt her diaper suddenly start to slip from her rear. Figuring one or more of the tapes had somehow popped off in the middle of the night, she reached down with a hoof and discovered that the diaper was now really baggy; it wasn’t near as tight enough as it had been a few hours ago. Her eyebrows furrowing in confusion, Rainbow looked back and saw something a little unsettling.

Her wet diaper looked as if it was now two sizes too big. Cocking her head to the side, Rainbow looked back and found the stuffed animal that she’d been snuggling with just a few hours before. As she peered through the near darkness, she also made out the outline of her pacifier, laying right next to Mr. Bunny Wabbit. Somehow, both had gotten a lot bigger, just like her diaper.

An unsettling feeling suddenly filled Dashie. She knew something was wrong, and she started tearing up, silently praying that she hadn’t shrunk in size. “Mama, wake up! Wake up!” She tugged on Twilight’s wing as hard as she could, which didn’t amount to much. The sleeping alicorn didn’t budge.

Dashie nudged her side with her muzzle, nuzzling Twilight right above her breasts, hoping she’d get up. “Mama, pwease!” she whined, using her snout to poke Twilight’s stomach. After a few more pokes, the alicorn awoke.

“Mmmm… how’s my little foal this morning?” Twilight groaned as she felt Dashie nuzzle her breasts. “Is Dashie hungwy?” She wearily sat up and used her magic to turn on a few lights. As they started to increase in brightness, she looked down. Her wing was blocking her view of her foal, so just before she was about to fold it, she smiled, wanting the first thing her foal would see this morning was her gentle and caring smile. She carefully folded her wing, taking care not to hit Dashie on the head. As the lights became brighter and brighter, Twilight looked down, letting her gaze rest upon her foal.

Noticing the look of confusion and fear on her face, Twilight paused for a moment, finally taking note that something had gone terribly wrong. She simply stared wide-eyed at her marefriend, her jaw hanging open in surprise.

Dashie was no longer an adult mare. In fact, she was now no bigger than a young filly.