Kuyy Share definition Flag Derived from the Thai word Kuy, its Furry slang for a Furries penis, with the extra Y secretly standing for Yiff. Hey babe you going to suit up tonight and give me that Kuyy. Kuyy by Dingknight June 15, 2021 0 0 Get merch Get the Kuyy mug. Buy Now — $32.95 See more merch