Ponis Head Share definition Flag a retarded punk that runs around, likes to hide in your butt and hits people in the head with a plunger. "That kid just hit me with a plunger!!!" "That guy must be a Ponis Head" Ponis Head by Not a ponis February 5, 2009 0 0 Get merch Get the Ponis Head mug. Buy Now — $32.95 See more merch