Hell Is That Noise/Myth, Legend and Folklore

The Ur Example may very well come from Classical Mythology. The god Pan loved to scare the shit out of lonely travelers by hiding nearby and letting out a bloodcurdling scream. Ever wonder where we get the word "panic?" Now you know.
- Pan was also pretty much the Glenn Quagmire of ancient Greece, except with the body of a goat from the waist down. So his cry didn't just sound horrible, it also warned people that they were going to get raped if they didn't run like hell.