To become pissed off in seconds. Used in South Park episode "It's a Jersey thing"
Laura: When I heard Nancy call Sheila a whore, I thought she was going to bust a tit.
by My name is already being used_ November 20, 2010
1 more definition
When a female, or a well endowed male, becomes so angry that their breast spontaneously combusts. Luckily for said person, it grows back in a few moments like a starfish grows back it's arm.
"If there aren't going to be topless girls in a bouncy house at this party tonight I'm going to bust a tit."
by OHNOITGODZEERA August 07, 2012