Rebecca slowly woke up, feeling a familiar sensation of fullness in her chest. She didn't even think about the fact that she was thinking of herself as a girl - during her nap, something had changed in her brain, but she wasn't entirely aware of it yet.
She reached for her phone and shook it to turn the screen on. The clock read 3:17, a bit over two hours since she'd gone to sleep. With no further input, the screen turned off, revealing her reflection.
"That's... different." she said aloud, realizing that her voice was a bit lighter than before. Her shirt had two small bulges in it now, which might not have been visible had she not soaked through her bra and into her shirt in her sleep. She tossed her shirt on the floor and peeled her bra off, the cups wet enough that they stuck to her skin a little. Remembering Jess's warning, Rebecca found her breast pumps and attached a new pair of bottles. She noted that she only had two more left. "I'll have to remember to ask her where to get more bottles," she thought.
She squeezed the bulbs, and her milk almost overflowed the suction cups. It looked different from last time: thicker, richer, more like cow milk than human breast milk. It took a few more squeezes on the bulbs than last time, but her breasts eventually dried up. She took the bottles off of the suction cups the way Jess and and took a look. The milk ran up about three-quarters of the way to the top. "It probably would've filled all the way up if half of it hadn't gone into my clothes" she thought.
Rebecca capped the milk bottles and looked in the mirror, cupping her breasts. They weren't big by any definition, but they were noticeable. She slid on a new bra and a new shirt, her third today. Even dry, you could see just a hint of a bulge through the shirt. That wasn't all, though. Her whole body seemed.. softer. More feminine. Most of the hair on her body had disappeared, and her panties seemed to fit a little bit better, though that might've just been her imagination.
Hiding the milk bottles in her pockets as best she could, Rebecca opened her bedroom door. Just outside, as Jess had promised, were her bags. She dragged them inside before going downstairs to the kitchen. The blue fridge was easy to find, and her bin was right near the front with her two bottles from earlier already inside. She added her two new ones, and grabbed a bag of baby carrots on the way out.
The downstairs common room had a few girls in it, but Rebecca wasn't too interested. She snacked on her carrots going upstairs, and started unpacking her bags. Then, there was a knock on the door. She opened it, and Heather stepped into the doorway.
"Hi! I was looking for you since we got here, but I guess you were sleeping. Mind if I come in?"
She could already see that Heather was further along in her changes than she was. Heather had apparently forsaken her shorts and underwear entirely, and had feathers starting to sprout from the lower part of her stomach.
"Sure!" She realized she'd left her milk-drenched clothes on the floor, and quickly tossed them into the closet. "You've got feathers already?"
Heather sat down on the bed. "Sure do. They itch like crazy coming in, though. You're lucky. Fur doesn't catch in clothes nearly as easily as feathers do. What's your damage?"
Rebecca took her shirt off, then her bra, revealing her breasts. "Just these.. and a whole lot of milk."
"Aww! They're cute! I thought you might be a little freaked out about being a girl, but it looks like you're taking to it fine. Thanks for your help earlier, by the way."
Rebecca smiled. "Milk's bad enough. I can't even imagine what laying eggs is like."
"Long and kinda painful. I had five in my first clutch, and I've got another due before bed. They have these things, they're kinda like massage tables only you lie on your back and just.. let it happen. At least I won't have any more periods."
"Oh man, I'm gonna have to-"
"Just like the rest of us. Anyway, I had a.. second reason I wanted to see you. Most of the chickens are trying to pair off with the cows or the sheep for uh... stress relief. That, and having a partner to help us lay, since we're all on pretty much the same cycle. I can help milk you, if you want."
"Stress relief? Like massages, or.."
"Like sex. You've got toys in here, right? In the bathroom?"
Rebecca nodded, and Heather got off the bed to browse through the toy shelf. She returned with a small, white plug with a remote control rubber-banded to it and a bottle of lube. "I'm going to teach you how to be on top. Take your clothes off, and get on the bed."
"That's not for you?"
"It's going up your butt. Just bend over, stick your butt out, and relax."
"I've never had anything in there before... is this going to hurt?"
"Not at all, as long as you stay relaxed."
Rebecca bent over and tried to relax as Heather dipped a finger in the lube, let it warm up, and then gently rubbed it against his rear hole. "You said you haven't had anything in there, right? Oh man, I'm gonna take your anal virginity."
Rebecca squealed a little as Heather's finger entered her. She could feel it exploring her, running up and down the inside.
"Let's see.. just gotta find your bitch switch. You know why they call it that?"
"N..no.."
"Because every boy bitches the first time they've got something in their butt until you give it a nice little.. press."
Heather's finger rubbed against her prostate, causing Rebecca to tighten up. Her cock immediately stood at attention, half-hard and half not.
"Just what I was looking for. You ready for the plug?"
"I-I don't.. yes."
Rebecca felt the plug enter, felt the shiver of pleasure when it pressed against his prostate, then disappointment when it slid just out of reach. "Why'd you stop?"
Heather climbed onto the bed. "Because this is how I teach you." She leaned back and spread her legs. "Just put your head here, and start licking. When you start getting it right, your plug will let you know."
Rebecca started licking. She knew the basics, but not much more. It only took her a few seconds to get her first buzz, a short one. Longer ones followed as she kept licking and sucking, until suddenly they stopped.
"Rebecca? Did you cum? I can feel something wet on the bed, and it's not me."
Rebecca pulled her head up and looked. Underneath her was a small, clear puddle that ran off toward Heather's leg. It wasn't cum, and it was too far away to be from her. "I don't know. It's uh.."
Heather sat up, and after a minute her eyes went wide. "Oh my god. It's pussy juice - but you still have your cock.." She turned the remote on, and the plug in Rebecca's butt pressed against her prostate. After a few seconds, her cock started drooling the same stuff that was on the bed.
"You're cumming pussy juice. I gotta try something. Stand right there, and don't move."
The plug turned back on, and Heather leaned forward to wrap her lips around Rebecca's cock. Rebecca's knees nearly buckled underneath her as a warm, tingling sensation filled her stomach. It was totally different than when he'd jacked off before - it was like his cock had been spread throughout his entire body. The tingling turned into fireworks, and then he felt all his muscles tighten. Heather pulled her head back just in time to receive a spurt of juice all over her face.
"You just came like a girl, didn't you? How was it?"
Rebecca couldn't even speak. Her mind was somewhere else, but slowly came back down to Earth.
"I can't even describe it. It was.. oh my GOD."
Heather smiled. "By the time I'm done with you, you're gonna beg them not to turn you back into a man. I'm gonna go finish myself off in the shower. Get your stuff, you're sleeping with me tonight. That bed's gonna need an exorcism after all that juice you got on it."