I.T.Y.S. Share definition Flag I.T.Y.S. (I told you so) I.T.Y.S. Mister Tucker Max because you've been spending too much time Jerking around females in strip bars and you gotten yourself in jail! I.T.Y.S. by MikeKal September 24, 2009 0 0 Get merch Get the I.T.Y.S. mug. Buy Now — $32.95 See more merch