sheeshoo Share definition Flag When you secretly pee in somebody's shoe. Invented by Robert Benfer on the podcast Chaos Pony for the segment "Robert Invents a Word." Brian, what're you doing? Oh, you didn't sheeshoo did you? sheeshoo by captain_e September 9, 2011 0 0 Get merch Get the sheeshoo mug. Buy Now — $32.95 See more merch