(adjective) someone who is overly creepy; i.e. creepy in every way possible. Makes girls very very uncomfortable and makes situations very very awkward. Prone to going for girls that are not interested in any way possible in the least bit.
"That dudes a creepass!"
Creepy asshole. Overly sexual person and makes girls (or guys for that matter) feel very uncomfortable by posting weird comments on Facebook and MySpace.
Zaino is a creepass.