Tuna Chunk Dunk Share definition Flag The act of imbedding your dick in a funky old cunt. This chick must not have showered for 3 days so it was one funky tuna chunk dunk. I gave that chick one hard tuna chunk dunk. Tuna Chunk Dunk by Weezer2 October 24, 2007 Get the Tuna Chunk Dunk mug.