Ties you up right there and then.

With that, Dr. Klein steps towards you and pushes you down against the table, so that your upper body is folded against the top of the table, face pressing into the cool plastic.

"Mmmmf! Mmmf!" You struggle, but he holds you down. You feel him wrapping something around your ankles, then he pulls your arms behind you and ties them together. When you are finally able to look up a little bit, you see that he has zip-tied your ankles to the legs of the table, and your arms are stuck behind you. You try to stand back up, but the way your ankles are tied makes it horribly uncomfortable. You let yourself fall back onto the table, heart beating wildly from apprehension.

Rough hands pull down your already-loose male pants and boxer shorts, and you feel your ass and pussy exposed to the air. You can barely move your hips, meaning you're stuck in this **** position.

He starts to smack your ass, hard, and you gasp in pain, but he doesn't let up. Tears begin to well in your eyes, and yet, you also feel yourself becoming aroused; the spanking and **** is turning you on. Every time he spanks you, you let out a yelp or a gasp, but after the first few times, they are almost equally from pleasure as from pain.

"You dirty, horny little slut!" Dr. Klein exclaims. "You're already fucking wet!"

With that, you feel two fingers plunge roughly into your pussy, and an involuntary moan escapes your lips. Your professor begins to work his fingers in and out, pushing into you quickly, roughly. Each thrust into your pussy leaves you feeling weaker and more aroused; you feel your cunt heat up and start to become wetter. You feel a third finger begin to circle your clit, and close your eyes, submitting to the wave of pleasure engulfing your body. Your orgasm build and builds as your professor continues finger-fucking your wet pussy, until you reach climax. Gasping and shaking, you let go of your body, letting the table support your weight, waiting for whatever comes next.

Without warning, something hard and stiff stabs into the beginning of your asshole, and you cry out in pain.

"MmmfffAAAHHH!"

Dr. Klein laughs. "You seemed to be enjoying our first few... activities... just a little too much," he says. "So I decided to up the ante. The closet in this room is full of sex toys; I went and grabbed this thing."

He removes the tip of the foreign object from your ass and roughly pulls your hair to lift your face off the table. He places down a large, purple dildo in front of you, probably eight or nine inches in length, and thick. It looked to be made of hard plastic.

"This thing is going in your ass, whether you like it or not," he explains. "I don't want to waste my lube, however, so the only thing I have to work with is your pussy juices. The wetter you are, the less this will hurt you."

The sight of the huge sex toy in front of you fills you with dread, but also with an aroused sense of anticipation. You want that thing inside of you, you realize. Nine inches of plastic, deep in my ass, with Dr. Klein's dick pumping my pussy... You let out a moan. Your professor laughs.

"Good, good, already getting hornier! God, it's been too long since I had a girl like this, I should've never hidden those rings!"