N.F.I

No Fucking Idea

Normally used in conjunction with annoying workmates always asking you stupid questions that you know the answer to but refuse to give it to them anway.

It also is a good way of telling the cops why you were speeding.
cop: fuckin' jeeeesus mate, how fast were ya clockin'?

you: N.F.I mate, but it was fuckin' awesome!!
by lil_foX September 15, 2005
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N.F.I

Acronym for "No Fucking Idea" (?perhaps Australian slang)
Fixing Cars? My wife has N.F.I about fixing cars.
by Pauly H September 04, 2005
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N.F.I

Manager: Could you do me a favour?
Employee: N.F.I!
by The Brewery Boys (Team 1) September 14, 2004
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