diamond tit Share definition Flag Diamond tit is when your nipples get so hard they could etch glass , usually from being aroused!!!! Last night I was hanging out with this hot chick and I got so aroused I got diamond tit diamond tit by Abracadabra bitchzzzzz August 9, 2022 0 0 Get merch Get the diamond tit mug. Buy Now — $32.95 See more merch