Acronym for Burritos in the microwave. Similar usage as AFK for heavy gamers who survive off a diet of burritos and mountain dew.
by flacidplacid1 November 16, 2009
Top Definition
Meaning "balls in the mouth." Denoting a large degree of suckness.
Person 1: "How's the snow shoveling going?"
Person 2: "BITM."
by imperius1 February 10, 2010

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