Flood Bound

Last year during the flood, I was travelling with my parents in their RV. I was home from university and had joined them for a road trip. But we got caught by flooding and couldn't return home for a week. It wasn't a problem for me, I was on a break and had plenty of time. But my father had to be back at work the next Monday. He managed to get a flight out the next morning Friday. Mom and I would wait until the flood water receded and would bring the RV home. My mom is 41 a little overweight and only 5'3" tall. I'm 20 skinny 6'2" and play basketball for my university. All was going well on the Saturday morning, mom had gone shopping and I was alone in the RV. I started to read and then after a while started to masturbate. It was then that mom returned and caught me masturbating. She didn't say anything and I covered myself up, after lunch we went for a walk to the flooded river blocking our way. It was still raining in the hills and keeping the water high and over the bridge. After dinner my mother asked if I had a girlfriend yet and I answered Not yet. Then she asked If I had been with anyone yet. Yes, but it was just casual sex I replied. Nobody special then she asked, No not yet I responded. After a bit she went to her bed, a short time later I went to mine. Not being really sleepy I started to masturbate myself under the covers. Then my mother was standing beside my bed and caught me again. She said You can't keep your hands off your dick, I was a bit shocked at being caught a second time. I replied Nothing else to do. Well I've been playing with myself as well and decided to see if you would help me out She said. I asked You want me to fuck you. Yes, your father and me have a very strong sex life and have sex every Saturday night as a rule she replied. But I'm your son and your my mother I replied. So we keep it in the family, your father will be banging Wendy 64 our neighbor tonight and if I was home it would a threesome she added. You, dad and Wendy are having sex every Saturday night I asked. Mostly, except when she has visitors. She a horny old girl and we have been doing it for almost 6 years since Edward her husband died, she answered. I was just looking at her and she asked Was I willing to fuck her. I said If it's what you want, I will. Good come with me to my bed its bigger she replied and I did. We had sex and again in the morning and I found that she was always willing to have sex. Even after getting home I got sex from her, when dad was at work. She arranged for me to some work for Wendy, knowing that Wendy would be willing to have sex with me. She did and we kept it secret from Wendy about me and mom. Wendy kept it secret about me and her, but I told mom. So only dad doesn't know about me, mom and Wendy. Dad plays golf on Saturdays and Sundays and I have sex with mom in the morning and Wendy in the afternoon. They have sex with dad Saturday night. After I returned to university, Wendy came to the city and I visited her in her hotel. On my next break, we started the routine over again.