kaiowhat Share definition Flag What you say when someone activates Kaio-ken against you right before they kick your ass Goku: KAIO-KEN!!!!!Vegeta: Kaiowhat?*Vegeta then gets his ass kicked* kaiowhat by GamerLuna1887 March 29, 2019 0 0 Get merch Get the kaiowhat mug. Buy Now — $32.95 See more merch