tsunami tongue Share definition Flag When you stick out your tongue and move it in a wave like motion. Example Channing Tatum in "21 Jump Street" Channing Tatum use tsunami tongue to get out getting detention in school. tsunami tongue by T.H.O.T Conscious1185 August 30, 2015 0 0 Get merch Get the tsunami tongue mug. Buy Now — $32.95 See more merch