A childhood belief about ghosts

I too was terrified of the "Bloody Mary" mirror trick. In fourth grade, a new girl moved into town and she showed me scars on her stomach that she said "Bloody Mary" had given her. Even to this day I get nervous around mirrors in the dark. I'm always afraid that I'll suddenly scream "Bloody Mary" three times and she'll show up. I've always been too afraid to try it.