A male organization known for their childish exclusion of others, excessive alcohol consumption, false sense of accomplishment and, of course, small genitals. Members of such an organization tend to travel in packs and develop a feeling of inadequacy and malaise if a brother is not aronud to have his back (or give him oral sex). Futhermore, brothers are often stricken with low grades, wide assholes and several sexual diseases.
Is that guy in a fraternity?
-Yeah, the popped collar, croakies and hangover are a dead giveaway.