Through the grapevine, I heard about a mother offering her daughter. I contacted the woman and we agreed to meet. She showed me a clothed photograph of the girl who was pretty, a skinny little thing but very desirable. Her mother made me produce identity and explained the rules: no vaginal or anal intercourse and no cocksucking. I explained that I only needed to be wanked and that the girl did not have to undress although I wanted her to have bare feet. We agreed a price which was expensive but after seeing the picture I definitely wanted her. The mother said she would call me, evidently taking time to check me out. They lived in a suburban one family home. I paid and the mother explained that she would be present throughout to help the girl if necessary. But she assured me the child knew what was going to happen. I was taken to her room where she waited for me in jeans, a t-shirt and bare feet as requested. I undressed without preliminaries and lay naked on the bed with a towel under me. The mother told the girl to take my cock in her hand. She played with me for a bit while the three of us talked. I liked the mother watching. Once the girl had got my cock really hard, she began to masturbate me, slowly at first. This lasted for about five minutes during which no one spoke and the girl kept an intent gaze on her hand wanking me. This couldn't have been her first time because she was really good at it. When I cummed, she smiled for the first time. The mother had a box of tissues ready for me to clean up. I visited several times more until the mother said she had paid the off debt which required her to prostitute her daughter. After the last time, she gave me a photograph of the girl to wank with in future. I still have it and I do often. There were other girls before and since but this one was once in a once in a lifetime find and I vividly remember to this day how expertly she wanked me.