NDT Share definition Flag Acronym: Non Dick Toucher. A female that refuses to touch a man's penis during sexual intercourse. Or shows lack of interest in the said organ. Was that girl you slept with on Saturday any good? ....or an (NDT)? NDT by Gintdalf January 30, 2014 0 0 Get merch Get the NDT mug. Buy Now — $32.95 See more merch