She usually said, "Harold, it's none of your business." I didn't pry into it further in order to keep the peace. We didn't do more pictures for the ne...t several weeks. Nothing seemed appealing until Brandi asked, "Can you take some pictures of the two of us together?" I thought about it and said, "Sure, we could try. I've got a remote for the camera, and we could set the camera on a tripod." So, at first we took a group of pictures of us in various state of dress and undress. Brandi wanted us. “Honey, I’ve got to put my cock inside of you. Why don’t you ride me? Show daddy how good his baby can fuck!”Tim went on his back and I climbed on top of him. I eased my pussy down on his very hard and erect cock. The Viagra was working and his dick was as hard as steel. He was a bit wrinkly, but he really turned me on.Once his cock was inside of me, I rocked slowly over his cock. He grabbed my buttocks and helped rock me. My breasts were bouncing while I rode him. He had a very horny. "My face must have been like what???? Because he repeats himself, "...and 'Yes, Sir' is the only response I want to hear or I send you out of here to deal with them thugs on the porch." I slowly slip off the couch on to my knees, now I'm looking up directly at his cock hanging right in my face. I try to keep my head down keeping it out of my line of sight. "The study isn't going to work if you don't look at it" he says. I look up, I really didn't want to get slapped or worse yet, sent out on. I wound up gagging and losing my lunch which was fortunate because I hadn't eaten any so not much to lose. After I recovered he continue to use my mouth like it was a pussy pulling out at the end and coming all over my face. So after the oral games were done the guys decided it was time to fuck me and fuck me well. They all took turns fucking my pussy or my throat for the next hour. Mostly I loved it but Johns ten inch cock was a bit painful. (Over the years I've learned how to handle much.