turd tard Share definition Flag I mix between a turd(poo) and a tard(mentally ill person). This word is usually used as another useless and random insult. You are such a turd tard Phillip! No Rebecca, you are the fat turd tard! turd tard by Devvinnn March 28, 2009 0 0 Get merch Get the turd tard mug. Buy Now — $32.95 See more merch