porcupine's balls Share definition Flag They're small, round, and they don't give a shit. "Let me tell you about a porcupine's balls: they're small, they're round, and they don't give a shit!" porcupine's balls by Sub-Zero June 26, 2005 0 0 Get merch Get the porcupine's balls mug. Buy Now — $32.95 See more merch