this is also not a true voyeuristic expierence, but it is as close of one as I have to share.
I was lying in bed with my girlfriend in her dorm room.. I had planned to go back to my room around midnight or so (since I wanted to sleep at my own place)... well come around 11pm her roommate walks in with her then boyfriend.
suffice to say, they thought the two of us were asleep.. I wasn't, my girlfriend was. They started to fool around on her bed (which was next to the door, and my girlfriend's bed was on the far wall). This made me basically freeze and not want to be noticed as I knew I would kill the mood. So I just stayed put and was going to wait for them to finish (thinking one hour.. no problem)... well they went at it.. went at it... around 1am or 2am they just started to have sex. I could see their outlines and that was about it (she was on top).
the funny part is this.. my girlfriend being asleep, and incredibly intolerant to heat ended up sitting straight up, I yoinked her down and told her to stay put, she shot right back up and complained loudly "It is hot!" and began taking off her shirt.
her roommate froze.. my girlfriend eventually sat back down, and they continued. I decided to just goto sleep and leave in the morning.. my girlfriend doesn't remember anything other than being hot and me pulling her back down for no reason
if this didn't make sense, I apologize, it is hot and late