tuna twat Share definition Flag A stinky firecrotch who sleeps with whoever she possibly can, and then doesn't wash her vagina. Miranda Lambert has a fat tuna twat and sleeps with her younger siblings friends. tuna twat by Thundercats are go! October 21, 2008 0 0 Get merch Get the tuna twat mug. Buy Now — $32.95 See more merch