The origin of bust a cap meaning to discharge a firearm has become a general threat of violence with the implication that a gun will be involved. To threaten to bust a cap in someone's ass is also not intended to be anatomically specific, as kick ass or whip your ass are not descriptive of specific actions against someone's posterior. Ass as in "your ass" "my ass" etc refers more to the whole of the physical person. Further appellations such Honky, nigga, nigger, white boy, bitch, etc. are context dependent and may not have racial or gender implications.
"I'm gonna bust a cap in yo ass" "I would never bust a cap in your ass" "Please don't bust a cap in my ass" etc
by Doc@demon September 2, 2008
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(v.) to plase a bullet into someone's buttox; usually done out of anger, fear, frustration, or as an act of self defense.
by ips420 September 20, 2006
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Jonny: I will bust a cap in yo ass.
Byron: Try it.
Jonny:*Grabs Shotgun* Are you sure?
Byron: Yeah
Jonny: *Shoots Byron*
Jonny: I will bust a cap in yo ass.
Byron: Try it.
Jonny:*Grabs Shotgun* Are you sure?
Byron: Yeah
Jonny: *Shoots Byron*
by ?? January 31, 2003
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Get the pop a cap in yo ass mug.by Timothy McVay May 30, 2006
Get the pop a cap in yo ass mug.he shot him
English teacher "you have to use proper English when you're writing summaries in your reading log. is 'he popped a cap in his ass' proper English? no"
by applealex December 3, 2009
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