1 definition by nathan haley

Short for borderline intellectual functioning. 1. a bif is not a "downie" but then again not smart either. 2. below average intelligence. 3. George W Bush. 4. politicians in gerneral. Often refers to individuals that wear tacky metal alloys in thier teeth.
Jay-Z just spent $100,000 dollors on a new grill yesterday, fucking BIF is wasting his money!
by nathan haley January 22, 2007
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