Once again I started caressing her body but this time my fingers also went inside her two holes, searching for those spots of pleasure hidden there. S...e did not last long; once again I could enjoy the sound of her coming. --, I was still fully dressed, but I felt that now it was time for me to have physical pleasure too. I unzipped my pants and made her still blindfolded, take my cock in the mouth. The way she sucked it told me that she had been more than satisfied with handling her the first. I began to fantasize more and more about my mum. Then I had the thought appear in my head to try and make my dark passionate dreams come true with my mum. I decided what to do was to make sure my mum caught me wanking off in my room. I really wasn't nervous; I was actually turned on thinking about having my mum catching me wanking. When I got home from school I normally would jerk off but I waited a couple of hours until my mum would be coming home from work. When it was getting closer to when. Not that Lizzie minded. This really was the dream job. She got to use her professional expertise and intelligence while constantly working with penises in various states of sexual arousal. She only wished it was ethical to covertly watch their late-stage test subjects as they attempted to jack off in the sterile room down the hall, dosed with whatever newest drug cocktail the lab had devised.Their latest trial involved studying the patterns in the electrical signal in people's brains as they. Eventually, Mr. Lund wandered back into his apartment, still muttering to himself, and shut the door. David must have been listening for the sound because an instant later he began swatting Chelsea's behind again. He gave her ten more smacks, each harder than the last, before he finally released her.When Chelsea managed to pull herself upright she was dizzy, stiff, sore...and really, really horny. She looked at David, who was, to his credit, looking slightly apprehensive, wondering if he'd gone.