some one with a stick up their ass. Someone who is so focused on following the
rules that they often seem to have no sense of
humor, no spontaneity, and no desire for
fun.
Normal Guy: "Dude! Do you want to come to our sweet party tonight? We're playing pong!"
Stick-Ass: "No. Underage drinking is not something I would like to take part in. Why
don't you just follow the rules?"
Normal Guy: "You are SUCH a
Stick Ass!"