bust on someone
v. phr.— «Their story is that Christian picked up the gun at the home of his girlfriend, Laurene Landon. He told Cheyenne he was going to “bust on” her lover. Christian walked into his father’s house, started arguing with Drollet and then murdered him.» —“Christian Brando’s Troubled Life” by Jeff Gottlieb San Francisco Chronicle (California) Oct. 2, 1990. (source: Double-Tongued Dictionary)