Fuck him hard

Mandy's mind was overwhelmed with lust and testosterone; she couldn't really control her urges. She quickly climbed onto the medical table between her body's legs. Her cock was a screaming shaft of throbbing flesh, and Karl was a soft target, still quivering from his climax. Mandy leaned in until her cock head was at Karl's cunt and simply thrust in all the way. The sensation of having her dick being surrounded by hot, slick cunt was mindblowing, and she let out a bellow that reverberated around the lab.

Karl was likewise surprised by the feeling of having his body penetrated, and his high-pitched scream of pleasure blended with Mandy's outburst. Mandy just plunged repeatedly into his cunt, while watching Karl's tits wobble erotically below her. The hunger in her brain was insatiable, and the nerve impulses from her cock just made her hungrier. In Karl's body, the friction in his pussy was sending shock waves throughout his body. His groin was throbbing, his nipples were tingling, and he just wanted more. His eyes snapped open when Mandy sucked one of his nipples into her mouth and flicked her tongue very quickly across it. He arched his back, and his cunt exploded in another orgasm, making his body gyrate wildly in its entrapment. He heard a loud shriek and realized it was his own voice.

Mandy's cock was assaulted by Karl's pussy, crushing and releasing it. The newness and excitement of the situation and the overpowering sensations propelled her into her first male orgasm, her cock blasting spunk into Karl's body time after time. It was very intense, and she growled ferally into Karl's breast.

Once she stopped climaxing, she just held her member deep in Karl's spasming channel. Karl soon slumped when he finished his orgasm, and the two of them just lay there together, catching their breath.

"I never knew it could be like this," Karl said wistfully. "I've never felt anything like this."

"Me either. The crazed intensity was a little scary, but what a payoff!" Mandy declared, her new voice dripping with satisfaction. "Oh, and, by the way, you won't get pregnant. I'm on the pill. Don't forget to take a pill tomorrow morning."

Mandy's new-found cock wilted and slipped from Karl's pussy. She rolled off him, and they both got dressed.

"Well, I'll meet you back here in 22 hours, okay?" Karl said, "Have fun with my body. Don't get it hurt."

"Okay, have fun with mine. Later."