pop a cap in someone's ass

present singular third person pops a cap in someone's ass · participle present popping a cap in someone's ass · participle past popped a cap in someone's ass · past popped a cap in someone's ass

1. slangvulgarTo shoot someone with a gun.

   The older teen was coming from "Tilt," the second floor arcade, when the shooter confronted him, threatened to "pop a cap in (his) ass," and, after the victim assumed what eyewitnesses say was a fighting stance, apparently did.

   2007 November 19, “'Cover me, I'm going to Starbucks'”, in San Francisco Chronicle, archived from the original on 07 Jul 2009

   2 more examples

   I been sayin' that shit for years. And if you heard it, that meant your ass. I never gave much thought to what it meant. I just thought it was some cold-blooded shit to say to a motherfucker before I popped a cap in his ass. But I saw some shit this mornin' made me think twice.

   1994, Quentin Tarantino, Roger Avary, Pulp Fiction, spoken by Jules (Samuel L. Jackson)

   “I'll give you thirty seconds to get out of here before I pop a cap in your ass. C'mon, move it. I'm counting now, one, two, three—better get your ass movin', four…” Carter started running, expecting to hear the shot and feel the rip of a bullet in his back.

   2004, R. Micharl Sullivan, The Dead of Winter, page 130

   Synonyms: cap