Every weekday morning at 6 AM I wake up to the sounds of the Orgasm Lady.  My bed is right next to my window, and so is someone else's in my building.

My roommate has never heard the Orgasm Lady himself, but he contends that these must be the sounds of a cat.  Sometimes he'll have me halfway convinced, but then I'll wake up at 6am one weekday morning and immediately think: "That's no cat..."