T.A.F. Share definition Flag True As Fuck. An add on to the already standing reply "true" meaning one agrees with something overwhelmingly Katie: Yo, let's head to the movies before it gets dark Bob: T.A.F. T.A.F. by brigs October 13, 2014 0 0 Get merch Get the T.A.F. mug. Buy Now — $32.95 See more merch