mud nugget Share definition Flag Noun. Usually the final bit of shit that your strain to get out, splashing into the water with a satisfying plop You gonna be long in the toilet man? Nah, just squeezing out a couple of mud nuggets mud nugget by Stevo24 April 26, 2006 0 0 Get merch Get the mud nugget mug. Buy Now — $32.95 See more merch