"Sexual Predator Dave", This is the nickname for a/any "large" person with particularly bad teeth and an all-around gross appearance named David that has a liking for underage girls. The girl of choice is usually around 12 years old.
Hey did you see S.P.D. today over at the pre-school? Because he wasnt at his house, or the elementary school, or the middle school. I sure hope i can get a hold of him before he gets a hold of another little girl.