Orgasmically.

Jennifer puts her arms around Dr Marcos and grips her by the globes of her ass. With a tug she pulls the scientist right to the edge of the table. The Doctor's heels lose their grip on the tables edge and her slim legs flail spread wide by Jennifers hips. She falls back to lie on the table.

"What...?" She protests, flustered.

Jennifer's hard, athletic butt clenches and she thrusts forward sinking the latex dildo to it's hilt in the tight cunt of the surprised Doctor. She rolls her hips at the point of full penetration before pulling back and thrusting the fake cock hard into Marcos again.

"Ohhh yeah!" Jennifer gloats. "God this feels good. You're so tight and hot Doc. And you're wet as hell."

The Doctor has abandoned her attempts to control the pace of the experiment and lolls back limply on the table with her long legs hooked around the hips of the athletic sports major. She has her fist pressed against her mouth as she tries unsuccessfully to stifle her moans of sexual excitement at the hard and thorough fucking she's receiving. As each powerful drive of the rubber dildo fills her Jennifer rolls her hits, stirring the thick shaft in Dr Marcos's tight, wet cunt.

"OH FUCK!" Jennifer almost screams, increasing the pace until she's pounding the dildo in and out of the Doctor furiously. "I'm gonna cum."

The student cries out inarticulately and her asscheeks quiver as her hip thrusts become spasmodic and uncontrolled. Dr Marcos slides up and down the table with each thrust, her hands attempting to grip the edge.

"OOOOOOHHH, AHHHH. OH FUCKKKKK!" Marcos is wailing loudly, as Jennifer's orgasm subsides and she regains her rhythm. "OOOH HARDER,HARDER. FUCK MEEEE!"

Spurred on by the scientist's cries, Jennifers thrusting hips move into overdrive.Her firm ass almost a blur as she drives the dildo home savagely. The Doctors small tits, bounce and swing crazily as her body convulses with each brutal invasion. Marcos screams loudly, her head thrashing from side to side and her legs locking and squeezing around Jennifer's body as she attempt to pull the student even harder into herself.

"Ugh, ugh, ohmigod. I can feel you cumming through my cock...ARGHHHH." Jennifer grunts,shaking like a leaf.

Both women let out long sighing groans and their bodies tremble violently as almost simultaneously they orgasm. Jennifer almost collapses from exhaustion after her furious pounding of the Doctors vagina. She sinks forward onto Marcos, her big firm breasts squashing the Doctors little tits beneath them. She seizes Marcos's head with both hands and her lips lock onto the Doctor's mouth as she french kisses deeply. Marcos returns the kiss, her arm going around Jennifers neck to pull her close. Both bodies shine with perspiration and the girls are breathing hard when they break the kiss for air.