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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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2
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 29, 2007
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3
Butt In Front- pussy is so fat it looks like a butt in front, see F.U.P.A
Damn that girls gotta fat B.I.F.
by justin c. October 21, 2003
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5
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 10, 2009
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n. Bif The Wizard; The leek wielding mascot of science depicted as a stick figure. BiF's name originates from the elements Beryllium and Fluoride. Is often associated with the word BiFtastic, meaning absolutely nothing whatsoever.
Dude: That's a BiF if I've ever seen one.
Other Dude: What's a BiF?
Dude: I don't know.
Other Dude: Woah... Deep...
by NNBTK October 30, 2009
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