Mint Nastyness Share definition Flag After you chew mint gum for a while, then eat afterwords , you still taste mint. Ew. "Dude I don't wanna eat now, I just took out my gum. I will get that Mint Nastyness taste in my mouth." Mint Nastyness by Unknown Unicorn June 16, 2011 0 0 Get merch Get the Mint Nastyness mug. Buy Now — $32.95 See more merch