80's music.
Specifically, there were two songs that must have been popular when I was young, say, kindergarten age that effected me strongly. One was called "The Rhythm Is Gonna Get You" and one called, I think "Maneater". The first said "The rhythm is gonna get you...tonight" and the other talked extensively about "Woah, here she comes, she's a maneater...watch out boy, she'll chew you up...she only comes out at night."
Needless to say, I stayed up at night, terrified of some huge jawed female monster with a taste for human flesh who roamed at night looking for little boys to eat.
Incidentally, however, the Rhythm never did get me. I dance like I'm having a seizure.