Dumk Share definition Flag When you're taking a massive shit and the toilet water splashes into your asshole Friend1: Bro I took a massive dumk and now my bootyhole got a rash Friend2: Ew that is disgusting Dumk by QWE123EWQ321QWE March 19, 2021 0 0 Get merch Get the Dumk mug. Buy Now — $32.95 See more merch