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To the Longboarding community including a wide range of longboarders such as the hippie longboarder, to biff is to lose control of your longboard and fall off causing physical damage to one's self. Biff or 'Biffing' also relates to eating the pavement where one who falls off their longboard hits the ground face first, usually hitting their mouth on a concrete or paved surface (not to be confused with curb stomping).
I totally biffed on my longboard and took a mouthful of concrete.
by JohnnytheFLASH May 02, 2010
Adjective describing a person of the upmost idiocracy. Biff is commonly used when such titles as Jackass, Retard, and Douchebag are not quite enough to describe a person. It is also commonly used to describe epic failure or defeat.

It may also be used to describe distinct personailty traits and physical features.(persistant look of confusion on ones face, excessive confidence, and a near identical cologne choice to that of Conway Twiddy)
Did you see how Biffy that guy was, he has a problem....he needs help

Lets get the Biff out of here.

You son of a Biff!

What the Biff is that?
by aaaa2222 November 12, 2009
Weird cool also used to describe someones white guy afro
dude rollercoaster tycoon is so biff
by Luke rfdshgfdjhhgjk March 15, 2008
To fuck something up
"Jack knocked over my drink and biffed"

or just simply say "you biffed"
by Tkrizz December 11, 2007
A somewhat archaic term for throwing something with force.
She was going spazzcakes, so I had to biff her into the wall.
by Lauchlin November 01, 2007
To Smoke a Blunt or any marijuana filled papers.
Let's go biff a beelow
by Nyko April 18, 2007
To cum into the eyeball of another.
Sorry babe, but I thought it would be funny to biff and knock out your eye : /
by Vicz0t teh pwnz0r September 07, 2006