When I heard the "Bloody Mary" ghost story as a child -- if you stand in a dark room and chant "Bloody Mary" three times, a wicked old hag will appear in the mirror and come out and kill you -- I was terrified of looking into mirrors in the darkness. I still avoid looking into the bathroom mirror until I can turn the light on...mirrors give me the creeps, and watching Poltergeist 3 when I was in my teens (the ghosts in the movie are haunting a posh apartment building where the hallways, elevators, etc have wall-to-wall mirrors, and they walked in and out of them) didn't help much, either...
A childhood belief about ghosts
