used for registering delight UK Echoic of gun use. West Indian and UK black.
“Zukie!” Chico called, grinning from ear to ear, “Boo-yah! What happen, Blood?” — Karline Smith, MossSideMassive, p. 20, 1994
Lloyd made his right hand into the shape of a gun and aimed it at the car. “Boo-yakka! Every dog has his day,” he said out loud, a grin stretched across his face. — Donald Gorgon, CopKiller, p. 40, 1994