A neighbor came when i was 18, guy was 35 and wife was 30 with a son . He was a big fan of me, i was the uncle. The guy was often travelling and the w...fe whom i called elder sis was working. I would know when uncle in town by watching the boy, his mother often would leave with me in evening, means a hungry couple having sex. Once i intentionally went to take a peep, sis was humping on her man on top position without and cloths. It was so good to watch, but when i entered i saw it was the guys. It was going on noon and since I was all done my assignments and tired of being sexually tormented by my own thoughts I had decided to go home early and find a costume for tomorrows party. I was turning down my street when I noticed a car in the driveway that didnt belong to my father as he was working out in British Columbia for the next two weeks. I ended up parking on the street because our driveway was small; walking towards the house I had just figured it must have been one of my mothers. Of course her back was towards me but I could make out her figure as she slowly removed her pullovers, then shirt and then jeans. I gulped and this was too much for me. My dick revolted inside my underwear (I had not changed ) and my breathing was heavy. Mamta Miss, continued talking about her plans to make this camping a learning cum fun filled programme.I just kept on replying in mono syllabe as my voice would have quivered. She then removed her bra, and from side I could see her boobs, she. Amber was moaning and panting and both Jamie and I could tell that she was getting really excited! I slipped my hand under her panties and started rubbing her slit while playing with her clit and pussy lips. Damn she was wet!! In no time at all she was cumming and I motioned Jamie to come over to the bed and kissed her and took one of her hands and placed it on Amber's panties. I could tell Jamie was surprised and excited so I asked Amber if she had cum and she said yes. So i looked at Jamie.