A phrase which once meant "anything excluding" or "not" but now which means absolutely nothing and is used by Yankees to indicate a lack of intelligence unbeknown to them.
Paul (From Tennessee): I got an 11 on my ACT...
Brutus (From New York): I got a 35, I am all but intelligent.
Paul: Are you sure they didn't mix up our tests?
Brutus: Oh wait, I didn't even take the ACT.