Bust a tit 

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.

Bust a tit by My name is already being used_ November 23, 2010

Bust a tit 

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."

Bust a tit by OHNOITGODZEERA August 7, 2012