(1) To beat up or to physically attack
(2) To verbally tease or skewer someone either in a joking or mean spirited fashion with the intention of embarrassing or humiliating them; similar to “cracking on” someone.
They bust on me because I came to work with two different shoes and didn't know it.
vb. To make fun of. To make someone the butt of your jokes. To create a situation in which someone is being busted on.
He made fun of my fat mama, so I had to bust on his ugly sister.