A person that is the opposite of bro. He is the target of mass teasing or bullying, especially when a Broey decides that he will finally go out. Broey refuses to drink Keystone Light with the other bros, and never gets laid.
Yeah, I did hear about the party Broey McBroster, but I also heard how you *didn't* do that chick, got slapped multiple times, and spent your night puking all over the 4 polos you were wearing.