One Way Street

You know those mirrors that only work one way? I sometimes fantazise that there's a box made out of those mirrors in a very public place, like for example a crowded street. It could also be a shop window. I imagine having sex, being naked, in very compromising positions, maybe even pressed against these mirrors, while people outside walk by unimpressed. I kind of like the thrill of a public place but at the same time I'm terrified of actually being watched. Sometimes I wish there was some kind of a public service for 'needs' like mine - like when you go shopping in a mall for example and you just want some time out...