Piness Share definition Flag A word that Dr. Robotnik says as part of the word "Happiness." When the sound clip is cut out and played repeatedly, it is mildly funny. HapPINESS is always so much more enjoyable when it's based on the misery of millions. Piness by Gimlet, Son of Groin February 10, 2010 0 0 Get merch Get the Piness mug. Buy Now — $32.95 See more merch