Butt in Front. Unsightly mound of flesh between the belly and the pussy. In extreme cases, the pile of blubber may actually develop a crease between the belly button and the vagina, giving the illusion of a butt in front.
Damn, that girl Shea's bif is making me hot!! I love the way the sweat runs down....
by DyinRyan October 23, 2007
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B.I.F is a graffiti crew in Sweden, known from the hiphop group "Looptroop", which apparently has members in it.
"You think I wrote B.I.F on Mac D without a reason" -Cos.m.i.c/Looptroop/Long arm of the Law

"Cosmic stayed home but BIF crew stay tight" -Looptroop/Ambush in the night

"but the story you tell do the letters i spell
s.h.i.t with the b.i.f c.r.e.w
love graffiti til death" -Looptroop/Illegal Commercials
by sir her November 21, 2006
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Short for Butt In Front. Similar to a gunt. Can be used for male or female
She had such a big BIF, I was able to fuck it. I love that.
by Copie Boy December 03, 2002
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Originally an acronym standing for 'Bloody Invalidity Fund', the terminology 'bif' fell into common use through the UK police force and amongst traffic wardens for defining those members of the public who have blue badge entitlement. The word has never been officially recognised and is often discouraged by managers in these politically correct times, however there are very few police, traffic wardens or civil enforcement officers who are unaware of the word and its meaning. Often given the misspelling of biff by those who use the word but are unaware of its original acronym.
"He has left his car on double lines but he is a bif so can't be booked for three hours".
by BadedasTheBlue October 13, 2009
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