bust a cap in your ass 

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

bust a cap in your ass by Doc@demon September 2, 2008

bust a cap in your ass 

it means to put a bullet in a person's ass for acting like a lil bitch

Im going to bust a cap in your ass for being a bitch.

bust a cap in your ass by Fidel May 9, 2004

bust a cap in your ass 

Something that dickheads say thinking they're saying "I'm gonna shoot you" but they're really saying "I'm going to ejaculate in your ass during anal sex" (usually homosexual)

I'm gonna bust a cap in your ass white boy!

bust a cap in your ass by joveblue July 10, 2004

bust a cap in your ass 

For a bunch of 'homies' down on the 'west side' to kill a whitey

Yo, Imma bust a cap in yo azz, Honkey

bust a cap in your ass by DaQuisha August 20, 2003

Busta cap in your ass

shoot em up

im gonna busta cap in yo ass

Busta cap in your ass by devin February 14, 2004