bust on

Verb

bust on (third-person singular simple present busts on, present participle busting on, simple past and past participle busted on or (colloquial) bust on)

1. (US, idiomatic) To make a joke concerning; to ridicule or make fun of.
   • Mr. Moffatt explained different signals that students use to express friendship, like "busting" on one another. To "bust on" someone is "to deflate their pretensions by means of aggressive verbal mockery." Mr. Moffatt explained that students only "bust on" their friends.1989 April 9, “Campus Life: Rutgers Anthropologist Examines Sex Life On the Raritan”, in New York Times, retrieved 16 Feb 2018
   • Three days after Nets Coach John Calipari called a reporter a "Mexican idiot," the team publicly apologized today. . . . "The way I understand it, what Cal was trying to do was bust on Garcia," Fenech said. "Once he saw Garcia's reaction, he realized he didn't think he was kidding."1997 March 24, Selena Roberts, “Ethnic Insult From Calipari Results in Apology by Nets”, in New York Times, retrieved 16 Feb 2018
2. (US, slang, African-American Vernacular) To hit or attack (someone); to insult (someone); to snitch on (someone).