Bif Naked aka Beth Hopkins, is a fabulous female Canadian rock singer. She has featured on the Buffy soundtrack, and also apeared in a few movies.
"wow bif naked rawks!"
"your telling me!"
by Mark June 19, 2004
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The area of a chick's ass that a male's Jackson Pollocks hit off when he bangs her
I sat down on my sandwich.
Now it's flatter than Jenna's biffing plate.
by Theeph May 28, 2003
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Brilliant Idea Fairy; the imbecile who doesn't help a situation and can actually make things worse. He or she will suggest ideas that are impractical, implausable or impossible. Most often found where senior management hasn't a clue and no experience and is directing operations.
BIF is very similar to the owner of a MBA with no practical work experience in the job you are performing who is attempting to make your job more productive.
by Crazy Q January 30, 2013
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A silly insult used by the Frogs to define the British, apparently because we eat too much roast beef.

(Note the lack of dashes)
Jacques: Tu es un ros bif!
Nigel: Qui a mangé toutes les tortes?
by Adam January 15, 2005
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To get extremely drunk on Slivovits (a Serbian plum brandy).
"Dude! You gotta help us!!! Mikey's losin it! He's running down the hallway in his friggin underwear screaming obcenities and stealing peoples spare change! He's slivo-biffed again!"
by Senator Jibbulosevich October 19, 2009
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Someone getting their rat/fanny/cock out.
"go on girl get ya bif out"
by Rate My Trout December 22, 2008
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To run away as fast as you can from a dangerous situation
"I was smashing my girl till her dad came in, and just biffed it out of there through the window
by Bläh October 27, 2016
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