Top definition
A shot glass with a pinch of chewing tobacco (usually copenhagen or red man brand) placed in the bottom, then filled with whiskey. Called a gutbuster because of the fact that it takes a strong stomach to be able to refrain from vomiting.
Johnny threw a shot of Irish Gutbuster back and immediately threw up all over the bar.
by Nabb, the brandon June 11, 2011
Get the mug
Get a Irish Gutbuster mug for your sister-in-law Sarah.