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The act of defecating into a toilet bowl in a manner inexplicable through standard laws of physics. Upon executing a mudshit, at least 90% of the bowl are covered in faeces. Typically, the mudshit remains in the bowl for hours until it becomes unflushable, rendering the lavatory useless.

Unlike the upper decker, which can be considered a witty act of civil disobedience, a mudshit arises from blatant incapability of using a toilet combined with severe malnutrition.
"Dude, my housemate pulled another mudshit!"

"Don't cover the bowl with mudshits!"
by thunderfromdownunder86 October 12, 2012
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