"Y-yes," she said through chattering teeth, and pointed. "That!"

"And what is that called, X-999?" Dr. Villiers asked, taking the huge prick in his hand and moving closer to her. "Tell me its name."

Marcy gulped and licked at her lips nervously. "Uh – ah – it's – it's your p-peter."

"My what?"

"Your – your peter."

"Oh, what childish nonsense! Tell me its real name!" He came nearer, aiming the big, red-capped cock at her unguarded cunt lips while he stroked it into full erection. "Say the word! That's part of the experiment."

Marcy's mouth opened and closed, but nothing came out. He knelt on the bed between her legs and let the throbbing prick touch the inside of her thigh.

"Tell me what this is!" he commanded.

"Y-your – p-penis," Marcy quavered.

"A penis is something a little boy has," he said, and rubbed the hardened flesh over the velvety skin at the top of her inner thigh. "A man has a cock, a prick! Does that feel like a penis to you?"

Marcy bit her lip to keep from moaning as the hot man-flesh sent jolts of electricity, through her quivering body.

"Don't be afraid of the words," he said, passing the rigid shaft lightly across the open, yawning lips of her dripping cunt. "Tell me what this is, X-999!"

"It's – it's your c-c-cock," she finally choked out.

"Right! And that's the way you will refer to it in the future! You are going to become well acquainted with my cock! You will be impaled on it, skewered and fucked by it! You will take it in your mouth and suck it! You will get to know it better than you know yourself, so do not hesitate to use its proper name!"

Marcy closed her eyes, not wanting him to see how she was being consumed by a wild inner fire she had never known before. She was engulfed in waves of physical passion she had never imagined possible.

"This part of the procedure is for your sake, as well as for the scientific information it will yield," Dr.