Word of Irish Gaelic origin; an insult. Use this handy acronym to remember the meaning:

B ig
I ignorant
F at
F ucker
Man, Miguel Caron is such a biff. I hate him.
by The Zebu January 25, 2004
best friend, generally the ultimate best friend

derived from the word bffl
Elendea is my biff, we have known each other for 6 years.
by Nicole June 15, 2006
stupid shit bullshit stupid ass
Man Jim a really biff
by Jessica April 22, 2004
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 09, 2010
v. To strike or punch; n. A blow or punch.
This fist is going o biff you!
by Exploding Boy February 09, 2003
Best Internet Friends Forever
Internet Buddy #1: Will you be my BIFF?
Internet Buddy #2: Oh really? Do ya mean it?

Internet Buddy #1: Yep.
Internet Buddy #2: Yes, yes of course I will be your BIFF.
by Captain "Soap" MacTavish February 20, 2010
(n) a vagina
her biff is mad sexay
by missy November 24, 2002

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from daily@urbandictionary.com. We'll never spam you.