Like ejaculating, or nutting
Yo Sean, i was busting all up in her
The urgent need to go to the toilet to pee...
::Puts hand up:: Sir, i really need to go to the toilet. I'm busting!
Shooting a gun (usually a handgun).
Yo, my man started busting last night, clapped two of 'em.
same thing as 'cracking on' someone.
I kept busting their chops on the xbox, just like a mad man.
Teasing. Harsh teasing that often is embarrassing and/or annoying.
Liz kept busting on my "ugly" shoes. Meanwhile, I know she wants a pair.
Here comes Tom. Let's bust him about that blind date he had last night. She was one fugly bitch.