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1.
n. a maneuver in which a person (usu. male) walks and urinates simultaneously
He pissed on his shoes while trying to do a gillydog.
by Joshua W. September 25, 2005
 
2.
n. The act of walking and urinating simultaneously, usually in public
He accidentally pissed on his shoes while doing a gillydog.
by JoshuaW September 26, 2005