pifflenut Share definition Flag A nut of poo stuck to your bum hairs, sometimes you pick it, flick it at the wall or lampshade and whoever makes it go 'ping' wins! iv got a pifflenut, lets play piffle wars. pifflenut by Aytumz April 28, 2008 0 0 Get merch Get the pifflenut mug. Buy Now — $32.95 See more merch