A college girl was going out one night when she ran into her roommate coming in. Her roommate told
her not to turn on the lights when she got home that night because she had a big exam the next day and
wanted to get plenty of sleep. The girl agreed and left. When she got in later that night the girl
remembered to leave the lights off, and got into bed. When she woke up the next morning, she found
her roommate dead in her bed, and the words Aren't You Glad You Didn't Turn The Lights On?
smeared in blood on the wall.