Green’s Dictionary of Slang

(US black teen) onomat. noise of a gun being fired.

1995		Dr Dre ‘Keep Their Headz Ringin’’ 🎵 Buck buck buck buck booyaka shan!
1999		Krayzie Bone ‘Where My Thugz At?’ 🎵 Buck, buck, buck Where my thugs at? / Where my thugs at? Where the f**k my thugs at? / Ready for war Gotta be ready for war. Are you ready for war? Gotta be ready for war.