Fuck If I Know
Used when you are totally clueless or do not care about the subject matter.
A: Do you know who won the game last night?
B: FIIK man, I don't even like sports.
A nap in which the desired effect is not only not obtained but has in fact been reversed.
A Negative nap, a nap that produces the opposite effect of a normal nap, leaving one tired and drained.
A: Why is John so tired? Didn't he take a nap before coming over?
B: He must have gotten a neganap instead.