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When you think you are going to fart, but crap instead. Basically; When you shart
Person 1: Dude, watch this fart!
Person 2: Alright!
Person 1: *Sharts* Ah damnit!
Person 2: What happened?
Person 3: That sucks! He had premature ecrapulation! Haha!
by Zyth995 November 06, 2011