Big Fucking Monster. Used to describe, in gamer terms, a creature that is unreasonably large or powerful.
We really could have used your help defeating that BFM last night! It took hours without you.
by wufalder November 09, 2008
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i can stand going to the bfm, there are way too many stores and I always get lost!
by sweeney May 08, 2003
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"Dude, that BFM needs to shut it or I'll get medieval on his ass."
by MC May 20, 2004
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Code word name for Bare Fucking Minimum. Most commonly used at work.
Just gonna do a BFM on this job.
by avenger01 December 08, 2010
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