Someone who is absolutely hell-bent on not having a good time or, more importantly, has a great way of curtailing others having a fun time
My boss wouldn't let me have an hour off to catch the game. He really is the anti fun
A RAV Chick is a horror of a female who would have to use a combination of Rhohipnol And Viagra to have sex with another person
Oooof!, check out those girls over there; it's like a RAV Chick party