Top Definition
A shart that is so powerful in nature that it contains the properties of a shotgun blast. When a mega shart occurs, the 'victim' will usually feel horrible for about 3 hours leading up to the blast. When the time comes, the person will usually get on their knees as a result of the pain; the mega shart usually occurs about this time, blasting out of ones asshole, usually tearing muscles and distending the anus, the blast blowing out of the pants in a shotgun like manner.
Jim was gripped by pain, and, being the experienced man he was, he knew it was a mega shart. Falling to his knees, he let loose, feeling the extreme pain and massive amount of crap rip through his ass, and burst out his pants.
by TRAPSTAR550 March 26, 2010

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