Collaborative sex stories let us write the plot together

(Medical Experiments, continued by Feanor86...)

Your eyes still locked on Doctor Mandy’s tits, you thrust forward and bury your cock in Jenny’s pussy.

Oh, how wet it is — your fingering has made it like a swamp down there. The squelching sound you hear as you thrust in only turns you on further on and you feel your dick pulse as it’s sheathed between Jenny’s legs.

“Mmmrrphhh!” Jenny protests as you stand there, six and a half inches inside her, “Mmrrrpphh mmrphh!”

Taking this as encouragement, you slowly draw your shaft out of her and slam in again, still facing Doctor Mandy. She slowly walks over to you as you pound your hips against her assistant, while keeping her firmly bent over the desk.

“Interesting,” she muses as she approaches you. You stare her in the eyes now, desperately wanting to ravage her goods. You stop thrusting in and out of Jenny and stand still, panting, your tip sitting on her pussy lips.

Mandy wraps her hand around your willy and begins to slide it up and down the silky wet shaft.

“Who’s a big boy?” she coos as she wanks you off, “Ooooh, who’s a big boy?”

You inhale sharply and, sensing what’s coming, Mandy shoves your cock back inside Jenny. This, coupled with Mandy’s other hand now squeezing your asscheek, just sets you off and you fire what feels like gallons of jizz inside Jenny.

You slowly draw your dick out of her now-even-creamier pussy and Doctor Mandy nods in approval. She gently takes your hands off of Jenny and lets her up, then takes the sticky panties out of her mouth.

Jenny is breathing very deeply.

“Doctor I swear,” she says between pants, “I didn’t… I tried… He-”

“Don’t worry Jenny, that was an excellent job. How did it feel to you?” Doctor Mandy asks, her brow furrowed.

“Well,” Jenny says, a bit taken aback, “He took me by force but… it felt good. Very good.”

“Good,” Mandy replies, “How do you feel… Steve, is it?”

“Yes ma’am, I’m Steve. And I’m ready to give you the same treatment.”

Mandy looks slightly taken aback and Jenny’s mouth hangs open in shock.

“Well Steve,” Mandy begins, “hospital policy is…”