Before I could find my voice again, I felt the chair being turnedaround. "There," Not-Me said, as she came into view. "This should help."She stepped a...ide, revealing a full-length mirror hanging on the wall.For several seconds, my mind stubbornly refused to accept what my eyeswere seeing. As the heartbeats ticked by, I found myself falling deeperand deeper into this waking nightmare.In the looking glass' reflection, an older man sat strapped into achair. He was dressed in a pair of blue jeans,. Mom went, “Sshh!” Dad said, “Lift your bottom”. More shifting, then both giggled. It was obvious they were getting ready to make love. With me in the same room! I could see anything but the dimmest outlines, but I had an instant erection. I took off my jockey shorts as sureptiously as possible to provide freer access to my penis, which I immediately began to handle.Muffled sounds drifted to my ears from the other bed. I could sort of make out a large dark hump in the dim light that. Then we set the camera down and got down to some serious nylon fun. We were rubbing our nylon covered cocks together and rubbing them on each others bums. John lay on the blanket face down and I got on top and dry humped him. The extra layers of nylon of the panties and my stockings felt great as our legs rubbed together and my nylon covered cock slid over his nylon covered bum. We got into a sixty nine and licked each others cocks through the layers of nylon. We carried on licking for a while. I knew it was going to be difficult for the 2 of us as he was married to my sister and although I knew it was wrong, I still wanted him.I had had a bad day at work and was feeling a bit low so phoned my sister, Debbie, to see if she wanted to go for a drink. Turned out she was out of town for a couple of days on business so she couldn't make it. I was disappointed for a minute before an idea started forming in mind. I grabbed the car keys and drove over to my sisters as fast as I could.After.