The nemesis of Marty in the Back To the Future film series. Marty manages to encounter several different relatives of the Tanner family throughout the three BTF movies.
Biff - "How about you make like a tree, and get out of here!"
by Lon September 1, 2005
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A term used to describe:
1. The action of hitting something or knocking something over.

2. A holder for your weed. Usually a folded-in-half small booklet; i.e: a game manual. Also acts as somewhere to hand break your greens. *Also known as a Biffer, called biff for short.
- "Dude pass me the biff²!"
- "You biffed¹ the biff²!" (You knocked over the weed holder!)
- "I biffed¹ him in the face good!"
- Throw in on the biff²!
by 709944RepresentBah December 9, 2012
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to screw something up in any way, minimal or major can constitute the use if the word "Biff".
Don't biff this one up like last time.
by Alex Osmond March 28, 2005
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"Jack knocked over my drink and biffed"

or just simply say "you biffed"
by Tkrizz December 11, 2007
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Tim's nuts resembled coconuts, he hasn't had a biff in weeks apparently!
by Richard r January 11, 2008
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BFF
if you sound "BFF" out, it sounds like "biff"
so instead of people saying B.F.F., they say biff.
by aseresssgadsr September 19, 2008
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To have an epic fail or get seriously hurt.
"Dude that skate boarder just BIFFED it." "Hey did u hear that a kid BIFFED it down the stairs by the school."
by DeltaSnipr April 10, 2010
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