The glass doors were open, with just the screen separating me from them, outside. I stood by the edge of the door looking out. The room was pitch dark...and I was careful not to make a sound.I had a perfect view of them on the loungers beside the pool. Uncle Steve looked up in my direction, but I couldn't tell if he saw me. I wonder if he knew I was there? I got a rush of excitement.Uncle Steve and Vanessa were passionately kissing. She tossed her long hair around to one side and straddled uncle. Mom undressed me and helped me into the tub. I caught her looking at my cock and this made me tingle all over. I sat in the warm water and she proceeded to clean me with a rag and soap. When she cleaned my cock and balls, I got the mother of all hard-ons. I mean my cock got as hard as steel! I guess because I had not been able to jack off for over a week it was ready to explode. I was embarressed. but mom acted like she did not notice, but I caught her eyeing my cock. My cock started to hurt. She turned her head and started smiling at my shocked face , she said whats up dont you like that and took her hand off , i said woo! well ofcoure i like it , its just a wierd thats all , we grabbed a drink and debbie said its time she went to sleep , i walked up behind her looking at her arse thinking of what i could of had , as we got to our rooms which were next door to each other ,i was just about to open my door when she said well are you coming in or not , without any hesitation i walked. "Okay", I said rather ruefully, "Maybe that wasn't such a good idea"."Oh, it was for me". This set off another laughing episode with much cuddling. This led, inevitably, to us both being aware of the hard, wet erection compressed between us. Wordlessly, she reached down, lifted one leg and slid it in. No encouragement was needed for me to push, pull back, push and meet her responding movements. Our faces were close together, eyes locked as she almost wantonly inspected the effect she was.