Kermungadoo Share definition Flag The act of Kermungadoo: To roundhouse someone so hard they shit their ass so much that it falls out by their shoes. Dude, this weeked I "Kermungadoo'd" someone and they cried and ran away to their mom! Kermungadoo by Bentheman37 December 10, 2010 0 0 Get merch Get the Kermungadoo mug. Buy Now — $32.95 See more merch