Voyeurism

Voyeurism is a pattern of sexual behavior characterized by strong, repetitive desires to observe unsuspecting persons who are nude, undressing, or engaged in sexual activity. Peeping Toms are the primary example of voyeurs; they sometimes wait hours in precarious places such as treetops to catch a glimpse of their desired subjects, risking their health, safety, and being caught by law enforcement. Voyeurs are typically males catching glimpses of females, but the reverse or same-sex viewings are not unheard of.