All the camera talk made me think of this one, but I wasn't comfortable sharing it while working.
My first experience with being watched was when a girl and a friend of hers cornered me in a co-ed bathroom at a warehouse rave. She made me stand and straddle the toilet while she fingered me under my skirt and her friend sucked and fondled my tits. They left the door to our stall open and she kept swinging it open by bumping it with her ass. I saw the expression of every person who walked in to the bathroom. Several people stopped and waited until we were done