Baby Makes Two

They started with stuffed animals, with Fluttershy eagerly showing off her small collection and Rainbow Dash procuring her plushie Spitfire doll out from her duffle bag. Together they played childish games of pretend, which soon expanded to include some of the wooden ABC blocks that Rainbow had thought to bring along with her. Time passed by quickly for the would-be babies as they laughed and played together, the movements of the clock being nearly imperceptible through their collective headspaces.

“Hey, Shy,” Rainbow started after a rousing game of block tower building. “You ‘irshty? I go’ shum ‘ottlesh.”

Fluttershy cocked her head, then sheepishly took out her pacifier. “What was that, Rainbow?” With a blush, Rainbow let her pacifier drop and dangle by her clip.

“I said, are you thirsty? I brought a couple bottles.” Fluttershy’s eyes twinkled, and she nodded enthusiastically. “Great!” Rainbow Dash shuffled to her duffle bag and began rifling through it, sticking her padded rear out as she did so. “Let’s see… diapers… baby powder… wipes…” Fluttershy’s heart skipped a beat at the mention of wipes. Would Rainbow Dash really…? “Aaaand bottles!” She pulled out of the bag with a plastic baby bottle clutched in each hoof as she hovered in the air.

“Y-you really thought of everything, didn’t you, Rainbow Dash?”

Rainbow Dash blushed, rubbing the back of her neck as she looked away. “We’ll… I sort of have lot of stuff at home.”

“Really? But, where do you keep it all? I’ve never seen anything for a foal the times I was over.”

“I have a room. That I keep locked.”

“Oh.” Fluttershy cocked her head. “Like a nursery?”

“Eh, sort of. I never bought any furniture or anything like that. Just, you know, toys and clothes and…” She trailed off, rocking her head side to side in hesitation. “…diapers. The basics, I guess.”

“Oh, that’s wonderful!” Fluttershy’s eyes nearly sparkled at the thought. “I’d love to see it next time I’m over.”

“Yeah, definitely!” She held up the bottles again. “So, uh…. What do you got to drink?”

Fluttershy giggled before walking up and taking the bottles from her friend. “Milk seems fitting. I’ll be right back!”

With a skip in her step, Fluttershy pranced over to her kitchen, opened her fridge and pulled out a jug of milk. She caught the eye of Angel, who stood on the countertop and staired at her inquisitively.

“Oh, isn’t this just wonderful, Angel! I never thought I would be able to share this part of me with anypony, let alone one of my friends.” She removed the cap from the two bottles and carefully filled each one to the brim with milk. The bunny quietly squeaked in response. “No, Angel, I don’t think she would tell anypony. Rainbow Dash is nicer than that, and I doubt she want’s anypony else to know about this either.” She screwed the rubber nipples back onto each bottle, then cheerfully scooped them up into her hoof. She made her way back to her living room.

She walked in to see Rainbow Dash holding her Spitfire plushie up on two legs, using the forelegs to knock down a block tower she had set up. “Gar! Everypony run from Spitzilla! Oh no! Ahhhhh!” she babbled, making her own sound effects as the blocks fell to the ground.

Fluttershy watched on, smiling broadly and letting herself giggle. At last she moved closer. “Okay, Dashie! I have a bottle ready for you now!”

“Yay!” Dash foalishly cheered before taking the bottle from her friend’s outstretched hoof. “Thanks Shy! You’re the best!”. The pegasus then promptly plopped onto her diapered rear, then brought her bottle to her lips with both hooves.

The sight was adorable. Clad in her onesie, with a pacifier dangling limply around her neck and the white plastic of her diaper sticking out the leg holes, Rainbow Dash sucked on her bottle with abandon. Fluttershy was about to do the same with her own, but then a thought struck her. She hesitated for a moment, unsure if it was okay, but after taking a breath she decided to go for it.

Rainbow Dash eyed her as Fluttershy crept forward, then behind. She stopped her suckling, feeling confused. “Uh, Shy? Aren’t you going to drink your…”

Fluttershy plopped down behind Rainbow Dash facing the same direction and wrapped a foreleg around her friend’s belly. Rainbow Dash let out a small yelp as she felt herself be pulled back until she was reclining into Fluttershy’s chest, the butter yellow mare’s rear legs held out to other side. Her cheeks lit up red.

“W-what are you…”

“I’m going to feed you your bottle!” She pulled the bottle out of Rainbow’s grasp and held it up to the blue mare’s lips for her. “That is if, um, you want to.” The bottle drooped and Fluttershy’s eyes drifted away. “I-I’m sorry, w-we don’t have to, we can-“

Rainbow Dash pulled Fluttershy’s hoof back up, directing the nipple of the bottle into her mouth. Once it was secure between her lips, she let go, and contently leaned her head into her friend’s chest. She began suckling immediately, and with a smile, Fluttershy nuzzled her friend. The feeding session went on for a few minutes, with not a word spoken between the two. Rainbow Dash did however let out a couple sighs of content, falling absolutely limp during the process. Fluttershy nuzzled her from time to time as the two got lost in the moment.

It was only broken when Fluttershy noticed a twitch in her friend’s leg. The mare stiffened, then just as quickly relaxed and continued her suckling. Fluttershy raised an eyebrow, then her cheeks brightened as she noticed the gentle hissing coming from Rainbow Dash’s diaper.

That answers that question, she thought. She became dimly aware of a similar mounting pressure in her gut, but it was still minimal. Besides, even with Rainbow Dash having done it, the thought of wetting herself in front of her friend still made her anxious and more than a little shameful. The continued hissing did make her curious though, and she made an attempt to relax as well. As expected, she couldn’t.

The hissing stopped a few seconds later, and the bottle ran empty soon after that. Rainbow Dash continued to suckle on the bottle even after it ran dry, only opening her eyes again when Fluttershy pulled away. She looked up at her with a smile.

“That was… wow. Thanks, Fluttershy!”

“Oh, it was, um, nothing really, I just, uh…”

“Want me to do you?”

“W-what?”

She wriggled out of Fluttershy’s hold and picked up the full bottle that Fluttershy had yet to touch. “I said do you want me to feed you too? It’s only fair.”

“Oh, um, sure, but… wouldn’t you like to, um… change first?”

“Oh, uh….” The Wonderbolt squeezed her rear legs together, causing a light squishing sound to eminate from her diaper. She gave herself a poke along the front of her waist as well. “Naw, I think I’m good for a while.”

“Are you sure?”

“Yeah, I’m sure. These Cloudies can hold a ton! I usually like to let them get way more full than this. I don’t think I’ll need a change for a while.” Her smile then dropped, as if realizing something. “Oh, ponyfeathers, are you not okay with me using them? Sorry, I should’ve asked first! I just assumed…”

“N-no, no, it’s alright!” Fluttershy stammered, rubbing the back of her head with a hoof, not making eye contact. Her blush deepened. “I just, well, I don’t have experience with… I mean, I haven’t…”

“Wait, you haven’t used your diaper before?” Rainbow Dash cocked her head, as if the concept of her fully grown adult friend not wetting herself was a weird concept.

“Well, um, no, not really…” Her hoof shifted from her head to her other foreleg. She could hear her diaper crinkle as she shifted uneasily. “I just never… I mean, I could never get myself to… I mean…”

“Hey, Fluttershy, it’s okay, I’m just surprised.” Rainbow Dash moved closer. She took hold of Fluttershy’s pacifier and placed it back into the yellow pegasus’ mouth. Fluttershy meeped, but otherwise took it without a fuss. The gentle suckling helped calm her down. “I figured if you were wearing diapers, you probably were into everything about ‘em.”

“’ish no’ dat.” Despite the pacifier making it hard to speak, Fluttershy didn’t feel any rush to remove it. “I ‘ust ne’ah try.”

“Soooo… you want to, but can’t get yourself to?” Fluttershy nodded. Rainbow Dash beamed. “Well, let’s change that then!” She scooted back slightly, holding a hoof over her onesie-clad heart. “I, Rainbow Diaper Dash, will teach you all about the art of peeing in your diapers!”

It was an absurd statement, one that she would never have in a million years expected to come out of a proud mare like Rainbow Dash’s mouth. Especially out of Rainbow Dash’s mouth. It felt so off-brand, and yet somehow still in character for the brash and cocky pegasus. Fluttershy couldn’t help but giggle, which quickly turned into full-on laughter as her pacifier fell out of her mouth. Rainbow Dash blushed, then joined in too.

“Oh boy,” she started, wiping a tear from her eye. She adopted a stern glare and jabbed a hoof in Fluttershy’s direction. “If you tell anypony I said that, I’ll deny it!”

“I wouldn’t dream of telling anypony that you enjoy wetting your Cloudies to the brim, Rainbow Dash,” Fluttershy responded between giggles.

“And don’t you forget it! Now, come on! You still have a bottle to drink. Just relax and think about flowing water or something.” She positioned herself similar to how Fluttershy had done earlier, holding the bottle up in invitation. With a smile, Fluttershy nestled between Rainbow Dash’s legs. She could faintly feel a squish from Rainbow’s swollen diaper impacting her own, but decided not to let it bother her. Instead she simply let her head rest on Rainbow’s chest. The bottle was brought to her lips, and Fluttershy started to suckle.

It was slow going, at first. The teat of the bottle delivered milk in a tiny stream, but as she worked it more and got into a rhythm, the milk flowed faster. Or perhaps she had simply gotten more comfortable with it. She wasn’t sure which, but between the rhythmic suckling of the bottle and the steady thump of her friend’s heartbeat, Fluttershy was feeling thoroughly blissful. She let herself go completely limp in Rainbow’s hooves.

“Let it go,” Rainbow Dash softly whispered in her ear. “That’s what your diaper is for. Just relax, and let it out.”

She didn’t reply, too lost in the bottle. But she did still try. Almost on cue, her bladder twitched. She instinctively held it, but then decided to focus on the bottle. She focused on the milk. She focused on Rainbow’s heartbeat.

Suckle.

Thump, Thump.

Suckle.

Thump, Thump.

Hissss…

She almost didn’t realize when it started happening, but it was hard to ignore. She felt her diaper grow warmer, and tried to continue focusing on the bottle feeding as the trickle of urine turned into a stream. Her heart started racing, but she kept her eyes closed and continued to suckle. It flowed faster and faster, and instinct pestered her that she was going to leak, that she was going to make a mess of her floor, that she was going to ruin her adorable onesie and maybe even Rainbow’s. She pushed that instinct away, holding it at bay as it thrashed and screamed inside her, telling her that this was wrong.

And yet, it felt so right.

The stream became a trickle again, and eventually she was finished. All that was left was a very warm and now very swollen diaper, which spread her legs even further apart. The sensation was downright electrifying, and she let out a sigh around the nipple of the bottle as she squished her thighs together. Satisfied, she let herself go limp once again and finished off her bottle.

Once it was empty, Rainbow Dash pulled it away, but didn’t attempt to remove Fluttershy from her position. “So,” she began eagerly. “How was it?”

“It was wonderful.” Fluttershy sighed again, eyes still closed. “I never thought I’d ever feel this young again.”

“Heh, yep! Nothing makes you feel more like a little baby than going potty in your pants.” She softly pressed a hoof into Fluttershy’s diaper, causing Fluttershy to meep in surprise. “Wow, you really went all out for your first time.”

“I-I really had to go…” She blushed, then followed suit with checking her own diaper. It squished and squelched as she prodded the front and bottom with a hoof. It had swelled up considerably, and yet she detected no wetness anywhere on her onesie. Her diaper had done it’s duty admirably, soaking up everything she threw at it. “Should I change?”

“Do you want to?”

“I…” Fluttershy squeezed her legs again, and felt a jolt of electricity race up her spine at the sensation. She had wanted this. She wanted to keep enjoying it. “…No.”

“Then don’t!” Rainbow cheered as she let her friend go and stood up. “We’re just babies! Big babies who don’t care if their diapees are wet or messy! Playtime is more important!”

“M-messy? Do you – oh!”

Rainbow Dash flapped her wings as she pulled Fluttershy to her hooves. “C’mon, ‘Shy, it’s time for us soggy babies to play! I even brought a coloring book!”

Fluttershy shook herself out of her momentary surprise and nodded with a smile. “That sounds fun, Rainbow Dash!” She placed her pacifier into her mouth. “Le’s go!”