Milk Dud Share definition Flag Those small pebble like turd droppings that float around in the toilet water or possibly in your pants. Similar to dingle balls Oh man, I tried to fart and blew out a couple a milk duds instead. Milk Dud by outonbail October 20, 2003 0 0 Get merch Get the Milk Dud mug. Buy Now — $32.95 See more merch