A Plain Ass Bitch: a human being of the
female persuasion who is
plain,
boring, average, and/or not especially attractive.
"Hey
Kelly, did you see Dmitri hook-up with that PAB. He must've been so drunk"
-or-
"Aw
shit Ian, that was a huge mistake, she's such a PAB"
-or-
"I'm gonna call that girl from Ciaro" - Simon
"You mean the PAB with the nose?" -
Cameron
"SHE HAD A NOSE!" - Simon