Simulated penis.

Dr Marcos adjusts the settings for the shorts. Jennifer groans as latex pushes into her pussy once more, though this time the intrusion is less rigid and molds itself to the contours of her inner flesh. The dildo up her tight ass shrinks and softens too, allowing her to relax.

"How's that feel Jennifer?" Dr Marcos asks.

"Better." Jennifer responds, seeming more at ease and recovering from her shock.

Jennifer experimentally takes a step and finding that the malleable plugs move with her easily she walks a few steps round the room. Becoming bolder and more curious the student bends and stretches as though exercising.

"Hey that's quite good." She informs you. "I can still feel it, but it's not restricting my movements at all. These are pretty comfortable now."

Dr Marcos touches another control. Jennifer looks puzzled for a second and then looks down at her crotch with her mouth falling open in surprise. Slowly extruding from the front of the shorts a rod of latex is growing and forming into a facsimile of a penis. After a few seconds the process is complete and Jennifer looks as if she has grown an eight inch dick.

"Wow, that's weird." Jennifer exclaims, staring down at the glistening black cock. "Kinda neat though, feels way better than a strapon."

Jennifer pauses as she realises what she just blurted out and her face reddens as she looks up.

"Relax Jennifer, your application did list your sexual orientation as bisexual." Dr Marcos reassures her. "We assigned you to this test as you would probably appreciate this more than others. I'd like you to touch the penis now please."

Jennifer shrugs and grabs hold of the black rubber cock. She shrieks in surprise and releases it immediately. She stares down at the rubber appendage for a second with an astounded look then slowly smiles in a deliciously lewd manner and reaches down again and begins to gently stroke the rubber phallus.

"Oh jeez, I can feel it. Now this is freaky." She laughs, playing with the cock. "I really got to get myself one of these."

"Sensors in the phallus transmit the sensations of heat and touch to the walls of the subjects vagina via the liquid dildo inside." Dr Marcos explains to you. "This gives the impression that the phallus is flesh."

Dr Marcos you notice is gazing at the student experimenting with rubber penis. Her breathing seems more rapid and a flush is showing in her cheeks as she bites her lower lip. You also notice she is subconsciously moving her slim legs, her thighs squeezing and rubbing together beneath her skirt and labcoat.

"Would you be interested in testing the shorts further Jennifer?" The Doctor asks, her voice betraying a note of excitement. "You would of course be compensated for your continued assistance in this experiment."

Jennifer is so engrossed in touching the phallus that she takes a moment to comprehend and answer.

"You want me to use this? And you're going to pay me?" She says increduously, sounding excited and eager. "What do I have to do?"

"We'd like you test the phallus in sexual intercourse." The Doctor replies. "I would assist with this as the second subject."