Top Definition
n. When it comes time in a porn star's life, her ass dramatically sags, and the guys in the film slap it like a banjo.
"She was a pretty hot bitch, but now her ass is a busted trunk, and reeks of sardines."

"During the filming of 'Prom Night', Mercedes got a busted trunk."
by MMjr March 27, 2009
13 Words related to busted trunk

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