Sorry.”“Sorry about Stacey, she really can get rather excited sometimes and lose sight of her professional status in this research. Anyway where w...as I? Ah yes.”Stokes flicked on the projector and up came a diagram of a woman and man copulating. Zoe felt her nipples harden as she looked at the textbook diagram. It reminded of school biology lessons where she first found out what fucking was. She remembered not soon afterwards she began to fantasise about the biology teacher fucking her and began. ..please." I slipped easily in and out of her, her wetness slick down her thighs, increasing my pace at her incoherent urging and my need. She reached between her legs and flicked her clit back and forth, getting closer and closer to orgasm as I slammed into her from behind. Forceful, deep thrusts that pressed her thighs against the back of the sofa, and bounced her tits back and forth. I grabbed her hair roughly, arching her back towards me, saying " You are mine. Come, come for me. Be a good. Fuck . Your pussy is so fucking tight." He spanks me again and groans along with me. "Damn it. Sexy bitch! Fuck, your pussy is squeezing me so fucking tight!" Another spank, and he growls wildly. He digs his nails into my hips and starts to drive into me harder and faster. “Fuck me like you mean it!” I snarl, whipping my head back and meeting each and every thrust. I scream and moan, yelling at him to give me more. I want more. I need it just like I need to breathe. He pulls my hair back,. With a petulant look on her face she fetched a powder from her purse and poured it into a glass of orange juice. I was made to drink at, as she gently fondled my cock a few times. Very quickly I felt it respond in her hands. She scolded me in a sweet way."Now, now Tony. Remember you must keep your popsicle hard at all times for your mistress and her friends to play with. But now honey, I don't think you will have problems anymore tonight." I soon found that she was absolutely right in that.