Acronym for "Butt In Front". Usually associated with middle, to elderly women in stretchy polyester pants which, when pulled up high enough give the illusion of their ass actually being in the front. Synonym: Pumpkin Cunt
Dude, my old aunt's got a BIF so big, she can rest a Pepsi bottle on it.
by Jac February 27, 2004
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trying to be smoothe, or impress someone.... and you fall and make yourself look like an ass..
by kj March 1, 2005
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Noun - pronounced "biff".
The unsightly bulge older women develop between their belly and their crotch. Stands for "butt in front".
See also minge pelmet.
The only thing I remember about my elementary school music teacher is her gargantuan BIF.

Look at the BIF on that miwlf.
by Cicero's Assassin August 30, 2007
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when some ones boob is in your face (also can be applied to butt in face)
Stephanie: *bends over*
Camila: whoa man total BIF
by Giaretta de la Sol November 11, 2009
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Man, I so sick of all the drama from this pussy, BIF...
by vulvatronic September 12, 2010
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To completely wreck a plan or goal
When you tell your girlfriend you'll pick her up for a romantic dinner and desert ( ;) )and completely forget her.
" ya biffed it bud!"
by Simple.life January 4, 2015
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When someone hits something really hard, sometimes used in cricket matches when a batsman proper smashes the ball. I think it originates from the old batman show when they had fights with the bad guys. Sometimes words came up in bubble writing when someone got hit, an one of the words the used was biff.
Joe proper biffed a six before
by Tom Tench May 16, 2008
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