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The act of a male entering a restroom intending to urinate only to discover a dire need to defecate, then reverting to an emergency dropping of the pants and mounting the toilet without turning around. This must all be done midstream.
"Dude, totally went in there to take a piss when, BAM! Hit me. Had to shit. Pulled a Mississippi Mud Hop just in time."
by Shin Wu Crippler February 02, 2012