pop a cap in (someone's) ass

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pop a cap in (someone's) ass

slang To murder or attempt to murder someone with a gun. Primarily heard in US. If you don't get out of here right now, we're gonna pop a cap in your ass! They popped a cap in his ass when he began hurling racial slurs at them.
See also: ass, cap, pop
Farlex Dictionary of Idioms.
See also:
  • yo
  • (one) will murder (someone)
  • he, she, etc. will murder you
  • I could murder (some kind of food)
  • I could murder a...
  • scream bloody murder
  • scream bloody/blue murder, to
  • scream blue murder
  • yell bloody murder