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A fart that is released by someone who is sick and has diarrhea. Whomever lets a mud fart will be delighted to find a creamy thick liquid that is somewhat similar to warm mud.
"Lilly waddled to the bathroom after letting a huge mud fart".
by DirtyBabyBunny September 12, 2005
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When you think your'e going to fart, but end up filling your pants. Accidental shart.
Somebody get Rey some pants, he had a mudfart.
by BarnacleWes October 03, 2018
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