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When you have to poop so bad, when you sit on the toilet, all your crap shoots out of your butthole like a shotgun. Somtimes happens when your sick and you have diarrea.
Dude 1 - "Dude i just took a shotgun dump"

Dude 2 - "Are you sick?"

Dude 1 - "Naw, i just had to go real bad"
by AddamsAppleDude January 23, 2010
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