Top definition
An unsettling of your stomach that can be caused by several different things. A night of drinking, a spicy meal, or any type of dairy product. This may also cause your stomach to boil, brew, or induce violent and explosive bowel movements and diarrhea.
I just polished off a pizza and a 12 pack of Old Milwaukee's Best Light. I guarantee that at about 5am tonight I'm going to have serious GPB. Yeah, that's Gastric Pummeled Belly.
by Junkboyy January 15, 2009
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