1. (noun) A man that is allergic to shoes, and thus requires allergy shots. Also, Biff's are notorious for low-nil-card-sliding and the accompanying facial expression of contempt for their competitors.
2. (verb) When going nil in Spades, the act of sliding a low card under all other cards of a trick, while simultaneously delivering a countenance of haughty contempt.
Damn, Biff's about to make nil with his shoes on and everything. Did you see when he Biffed that last trick?
by XPizzle June 19, 2008

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noun: a large male aged 18-45. This male has an over-inflated ego, a small level of intelligence, and spends way too much time at the gym. Biff's enjoy wearing sleeveless shirts, flexing in casual conversation when it is not called for, loudly announcing how much cheap beer they have drank, and aggressively pursuing females with 1950's style machismo. Often employed as bouncers.
"This biff cut me in the line to the bar so that he could order his buddies a round of Natty Light."

"That bouncer who cut his sleeves off is such a biff."

"I want to talk to that girl, but this biff won't leave her alone."
by MEvans August 08, 2007

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To Smoke a Blunt or any marijuana filled papers.
Let's go biff a beelow
by Nyko April 18, 2007

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a derogotory term for a fat woman. Who has a pouch of fat in the front that gives her the appearance of having two butts. BIFF = Butt in the Front
ABE: Look at that butt in the front

George: whoa she's a biff
by el presidente McCheese August 06, 2006

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Someone's boyfriend.
i'd like to introduce you to my biff, mike.
by frsssstv February 27, 2006

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Biff Tannen from the movie "Back To The Future". He could kick Michael J. Fox's ass even *before* he got the shakes.
"Oh no, it's Biff. Quick, beam me up Doc !!!"
by handle187 November 07, 2003

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To break wind
That biff smelt nasty
by James October 23, 2003

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