"Lina! It's time for a change, get your dick out."
I stared at Kay in surprise. She had a wild grin, and while that wasn't overly unusual for her, it was usually a sign of trouble to come. I gave her a wary look in response. "Why exactly do you want it? It's been over a month since I've had it equipped."
Kay nodded. "Exactly my point. Ever since the Subroutine Manager showed up, we've only been having fun with your vagina. Isn't that a little unfair?"
She did have a point. I wasn't particularly bothered over which set of genitals I used, and swapping between them tended to be more of a hassle than it was worth. Unless either Kay or I were in a specific mood, I just kept whatever I had on. But she was right in that our experiments hadn't really explored that side yet. "Alright, I'll get my dick on. I'm guessing you have a specific plan of some sort?"
"You bet your ass I do." Her face became a bit softer and concerned. "I mean, so long as it's alright with you. We don't have to if you aren't feeling up to it."
I dismissed her concerns with a hand waving gesture. "Nah, we're good. And I'll let you know if something feels wrong." I grabbed the equipment I needed and tossed it onto the bed.
While I was indifferent between having a penis or a vagina, the actual swapping between them was a different story. It wasn't a simple thing that you could pop in and pop out. The genitals were fully built into the front of my pelvis, so the entire frontal plate had to be removed. But even that was easy enough for anyone who knew what they were doing. The real problem came from myself.
Detaching the plate meant exposing an inner part of myself to view. A part filled with wires, circuits, and all sorts of mechanical parts. It was a firm reminder that whatever genitals I had weren't real. Most of the time, I was okay with it. I told myself it was the same as being plugged in at night, or detaching an arm for maintenance. All things I had no problem with. But for whatever reason, opening up my nether regions could set me off like nothing else. If I was feeling fine, it wouldn't be an issue, especially if I got Kay to do it and just looked away. However, if I was already having a bad day... We'd made that mistake before. Once and only once.
But today I was feeling fine. In fact, ever since my last incident there hadn't been any real issues. Maybe it was talking to Eisa again, or the comfort day Kay and I spent together. For whatever reason, I was ready to take my vagina off and get something more phallic on.
After stripping myself down, I lay on the bed and stared at the ceiling while Kay got to work. Contrary to what would be expected, it wasn't a particularly erotic sensation. Even on days when I was feeling horny to begin with, swapping out my pelvis was too clinical to be part of our play. And since it was such a volatile experience for me, it's not like we were eager to try things out there.
There was a strange feeling of emptiness between my legs, and I knew Kay had detached my vagina. If I were to look at my body, I would see an empty cavity with all sorts of wires and connecting parts sticking out. So I didn't look. Kay knew what she was doing, and it wasn't even as complicated as it looked. The model of my body was designed as a sex doll, after all, and it was supposed to be versatile enough for anyone's tastes. That meant the average schmuck would be able to switch genitals with just an instruction booklet. Of course, the manufacturers probably intended for each doll to handle it on their own, but I wasn't planning to do that anytime soon. I could have, but there was no need.
Finally there was a light snap as my new parts fit into place. Kay pressed down around the ridges and jiggled my cock in her hand. "How does that feel? Everything working?"
I let my body speak for itself. The pink cock in her hand was slowly hardening, something that brought a delightful smile to Kay's face. I sat up and examined my "new" set of genitals. I was a bit on the small side - around twelve centimetres when fully erect, and nothing special in the way of girth either.
While my cock worked on a similar system of expanding gels as the rest of my body, the fact that it was supposed to grow and shrink made things a bit different. The maximum and minimum sizes were adjustable, like my chest and my butt. However, when it grew erect it had a much firmer density, replicating the feel of a human dick as well. And of course, I had a nice set of balls hanging beneath it. They didn't produce anything, but they did have the option of storing a liquid that would be ejaculated. Kay and I used a fairly realistic seminal fluid from the local sex shop.
I sat up and began stroking it, feeling the skin slide up and down. "Oh yeah, that's working great. I always forget how nice this feels." It was nice, but the fact that it had been a few days since my last orgasm was probably the bigger factor. Normally that wouldn't be a big deal, but Kay's teasing with the app was almost a daily occurence. I couldn't help but notice Kay was sharing my eagerness. "So, what exactly did you have in mind?"
Kay shook her arms in giddy excitement. "Follow me. I want to see what all I can mess with now that you've got your other equipment." She sped out of the room, and I wasn't far behind.
Back in the main area, Kay was pouring over the app in her computer, her eyes glued to the screen. "Fascinating. There's all sorts of new parameters here, all regarding your new dick. It didn't even need to be updated."
It was fun to see her slip back into researcher mode. "Let me guess, you want to test all of them out? Go right ahead then, I'm curious to see what happens."