bust a cap

(redirected from we are busting a cap)

bust a cap

slang To fire a gun, typically at someone. If you don't get out of here right now, we're gonna bust a cap on you! A: "What's that noise?" B: "Sounds like someone's busting a cap outside."
See also: bust, cap
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
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