Tuna Tsunami Share definition Flag When a girl cums in a guys face while going down on her and covers him in the unmistakable smell of tuna fish. You may need to take several showers after being hit by a tuna tsunami. Tuna Tsunami by ftur April 22, 2011 0 0 Get merch Get the Tuna Tsunami mug. Buy Now — $32.95 See more merch