"Alright, here's the new deal. Every time Dave here," said Lara, pointing at Dave's crotch, "cums on you, you lose a little bit of your sexual hangups."
"Wait what?" said the couple simultaneously.
"But why," asked Dave, "wait, what's even going o--" Libby snapped her fingers, willing the change into existence.
"Look, I don't want to explain all that nonsense again. Cliffs' notes version is that I'm the goddess of sex, the guy who made the computer basically created a ritual to summon me, weird sex is more fun to watch, and you guys suck at entertaining me. So yeah, now, the more of your seed you get on your wife, the hornier and stranger she's gonna get."
"But I didn't want--" said Lara. Libby held up a finger.
"You wanted bigger boobs, I know. But I said that there'd be a tit for tat arrangement. Last I checked, you've got two giant tits. All I'm asking for is this one tat in return."
"But if Lara doesn't want to be corrupted then I just won't--" Libby rolled her eyes.
"For fuck's sake, it's like pulling teeth with you people. Fine. I've got enough mojo to stay out here for a few more hours, let's get funky with this." She waved a hand at Dave. His feet began to lift off the ground, suspending him in midair. Another wave, and his pants vanished, leaving him nude from the waist down. She snapped her fingers. "Let's get to work"
"No! I'm not going to--oh god." Dave trailed off as his dick sprang to its full length and began twitching. Libby snapped her fingers again, and the gouts of cum grew to a small river. "Oh god I'm sorry, Lara! You can fight--oh fuck"
Lara stared in horror as the geyser of cum approached her. She couldn't imagine it'd work the way that Libby said. She couldn't imagine that she'd be changed that much by this, but--
A drop of cum landed on her face.
Hm.
This could be fun.
Another burst of cum soaked her face, getting into her gaping mouth. Actually, this was pretty great.
The firehose of jizz began to soak her shoulders, dripping down onto her giant, heaving breasts. She shuddered in pleasure. Screw it, this was incredible, and it was only getting better. She couldn't get why she was so worried beforehand. She hadn't even considered what she'd be doing with her newfound endowments. Smother Dave, sure, that was a given. But they were too small to say, crush their car and strand them in paradise. And really, why would she stop with just her boobs? She could do anything. More junk in the trunk? More muscles? More chub? A dick? Screw it, she could pop her own head off and eat herself out. She could flood the apartment by getting horny enough, or grow to the size of a skyscraper and wear Dave like jewelry. Or send tendrils of herself across the room, covering the walls in torsos and lips and vulvas and tongues, watch as Dave ran for his life, then hunt him down through the forest, pin him to a tree, wrap herself around him and make him cum until he passed out. She could be the new goddess of sex or...
She looked down at herself. Her form was plastered white with strands of her husband's jizz. Looks like he had stopped. For now.
"I...I think I see what you mean, Libby," said Lara. "I think that I have some ideas for you to try out." Libby smirked.
"I thought you'd say that. Well, your wish is my command. What do you want?"