Replace some other bodily fluids with semen

Now that you have the breathing room to think, you're able to quickly figure out what you wanted to do next. You like that Erica now has cum constantly dripping out of her pussy, but other than the initial flashing and Erica's continued discomfort you aren't really able to see the fruits of your labor yourself. So you decide to take your idea to the next level. Or several levels.

Your body produces semen in place of saliva and sweat. You also no longer have to pee, since all fluid waste will become more pussy lube, and instead of poop your body converts any solid waste into even more semen, which you'll shit out of your ass in its place. Also if you ever start lactating, your boobs will produce semen instead of milk. Oh, and you can't get pregnant from your own semen, but you can get other women pregnant if you aren't careful.

There, that should do it for now. You admit you may have gone a bit overboard, but you really liked the idea of making semen come out of all of Erica's holes... well, the fuckable ones at least. And the next time she works up a sweat, it'll only be a matter of time until she looks like she just got back from a bukkake party. You are sorely tempted to make her constantly sweaty just so that you won't have to wait to see her like that.

"...Dylan?" you faintly hear Erica ask, "Dylan!"

"Huh?" you say, blinking as your mind is snapped back into reality, "Sorry, I wasn't listening. What did you say?"

"I was talking about how Cass and I made out for like an hour last night," Erica deadpanned.

You chuckle briefly, then ask, "...Wait, really?"

"Of course not, you dolt!" Erica teases, "But now that I have your attention, how about some Mortal Kombat like we were planning?"

"Oh, you sure you're still ready for an ass-whooping this early in the morning?" you ask with a grin.

"No, but it'd make me feel better to hand one out," she says. You notice her purse her lips slightly before she takes another sip of coffee.

"I'd like to see you try," you challenge.

Erica grins, "Alright then, let's..."

She trails off as her face scrunches up in confusion. She smacks her lips a few times.

"You okay?" you ask, already suspecting what the problem might be.

"Yeah, I'm fine," Erica replies uncertainly, "It's just my mouth tastes funny. Almost like..."

A flash of recognition appears on her face. She spits into the palm of her hand, then looks at it in shock.

"What?" you ask, approaching to see for yourself.

"No no no..." Erica mutters to herself. She moves her mouth around to build up more fluid, then spits into her hand again. This time you see the glob of semen trail out of her mouth and into her palm, landing next to the smaller puddle you assume came out of her mouth a moment earlier.

Erica goes pale, and her hand starts trembling as she registers exactly what's going on.

"Erica?" you ask, now starting to get a little worried, "Are you okay?"

"I'm... I'm going to be sick..." Erica says quietly, before getting up and rushing to the kitchen trash.

Not wanting to deal with seeing Erica's vomit and in somewhat of a panic, you hastily shout at her, Your vomit is also semen!

Oh shit.

Erica drops to her knees next to the trash can, and an ungodly amount of thick white semen erupts from her mouth, audibly hitting the plastic bag within. She barely registers it before another wave comes out of her mouth, this batch noticeably smaller than the last. She dry heaves a few more times, but with a mostly empty stomach she's already pretty much spent. By the time she calms down enough to catch her breath, the smell of male ejaculate is heavy in the air. She stares into the can and its contents for several more seconds, then scoots away from it and leans her back against the wall.

"Wh-what the fuck is happening to me?" she asks, too shocked to wipe the trail of semen coating her chin.

"I don't know," you lie, sitting down next to her and putting an arm around her shoulder, "But whatever it is, I'm going to be right here for you the entire time."

You're shocked when she buries herself into your arm and hugs you back.

"Thank you," she says, "For not running off, I mean. I'm not sure if I'd be able to get through this alone."

"Of course," you say, not sure what to do now. You were starting to feel guilty about upsetting Erica this much, but it wasn't affecting your arousal any. In fact, you have to shift position slightly to keep your hard-on from poking into Erica.

Erica notices you move, but misreads your intent. She pulls back and lightly blushes, now wiping the semen from around her mouth, "Sorry, I'm still a mess."

"No, no, it's fine," you reassure her, "Want me to get you some paper towels?"

"Nah, I can get them myself," Erica responds. She gets back on her feet and makes her way to the dispenser, pulling off some squares and wiping her arm as she shakily says, "Damn, my whole body is sticky now. This stuff is everywhere."

She isn't exactly exaggerating either. Apparently the strain of throwing up had made her a little sweaty, and while you couldn't see it very well from where you were, you could see a bit of what looked like cum snaking down the nape of her neck.

"Yeah, you're practically sweating the stuff," you say as you stand up.

"You said it," she mutters, before pausing for a moment. She lifts her armpit and sniffs, then frowns, "Shit, I think I actually am. This is so fucked up."

Curious, you grab a paper towel and wipe Erica's brow for her. Thankfully, it doesn't appear that she minds too much, only shooting you a sidelong glance in response. Taking a look, you see that while you managed to get a small trail of semen, most of what you wiped up was actually clear. However, the consistency and smell is way more like precum than actual sweat. Turning back to Erica, you see her reach into her shirt and wipe her pit, where you can see the more familiar white globs being scooped out. You suspect that the heavier she sweats, the thicker the cum will be, though you don't have any proof that's actually the case right now.

"Screw this, I need a goddamn shower," Erica says, throwing the paper towel in the trash, "You mind?"

"Of course not," you tell her, "I'll finish cleaning up out here."

"Well, given how you spend your Friday nights I bet your the expert at doing that," she quips, causing you both to chuckle somewhat. Then she says more seriously, "But seriously, thanks Dylan. You're the best."

She heads off to the shower, leaving you to clean up the remaining cum and think about what to do next.