Ain't Share definition Flag Some random word that was made in the 90s mostly by the "hood" of America. It's supposed to replace "isn't" but with a more "cool" way. *Not official Yo what's up dawg!*You did the stuff I told you? No I ain't doing shit man! Ain't by Yomomsfavourite June 4, 2023 0 0 Get merch Get the Ain't mug. Buy Now — $32.95 See more merch