A guy who is not in a fraternity (however has the potential of being in one) but has the character traits of a stereotypical frat boy. This includes drinking, partying, being a douche, and trying to get laid. Frat asses can also be fraternity boys who are only in the fraternity for those specific reasons.
Brian has turned into such a frat ass...he's not even in a fraternity!
8👍 3👎