The conversation was trivial and there was no sex talk.I then proposed to go upstairs to the bedroom.Once in the bedroom we got comfortable. Jen first...took off her T-Shirt and bra exposing her nice breasts, then wiggled out of her tight jeans, to finally take her panties off. I was getting so aroused to see my wife getting naked in front of a total stranger, and even more so to think that she was going to have sex with him. Lily was a six foot tall husky bearded man with an uncut seven inch fat. He slowly dragged Cathy off his cock by the hair and twisted it around to face the door.“Mummmm…” Cathy appeared mortified at being caught with her brother’s cock in her mouth… from the usual brother sister slagging off each other, sex appears to have put all their differences put aside.“Come in and shut the door… or fuck off” Ross sounded authoritarian“Ross…please…” the shocked mother stopped mid-sentence as she took in the whole scene including Vicky on the bed with her ass up in the air… her. She increased the speed and my hand shifted to her boobs, both of us were out of control she was little tired so placed on the front seat and carry on with pushes.As it was extreme so I signaled her to turn towards me, she immediately stood and again sat in me and this time her face was in front me. She kept her arms on my shoulders and started pushing me and giving me smile. While the dick was in action her hairs were falling on her face, her hands were folded on my neck I removed her hairs. The sound was immediate. From 0 to 100 as soon as the arm clicked in. Everything was the same as when I left. I grabbed a drink made a little small talk, then decided I had to go see if the girls had noticed. I went to the first dorm. It was still packed. I walked through the crowd. It too a bit but I did find her. She was still drinking, laughing and talking. It did not look like she noticed. Good, I thought, I hope she hooks up too. I then head to the other dorm. The group was still there,.