dunk a dutchman Share definition Flag to defecate; to void excrement from the bowels through the anus "Did that sign say 'Next Exit 24 miles?'" "Yeah, why?" "Man, I've gotta dunk a dutchman." dunk a dutchman by El Martillo January 6, 2009 0 0 Get merch Get the dunk a dutchman mug. Buy Now — $32.95 See more merch