shit sharpie Share definition Flag The marks left inside the toilet bowl following a particularly gruesome crap. It looks as if they were drawn on with a Sharpie. Man, I just punished your bowl and left a huge shit sharpie. shit sharpie by THDaddy March 18, 2008 0 0 Get merch Get the shit sharpie mug. Buy Now — $32.95 See more merch