Freako
A creeper. Someone who acts very strangely, or unhuman, and could be easily mistaken as a retard. Is also used very commonly instead of the word pedophile.
Example:
Krista: "Dude! Look at that freako over there! Why is he on top of a cat?"
Caitlin: "Major freako."
Krista: "Dude! Look at that freako over there! Why is he on top of a cat?"
Caitlin: "Major freako."