Nasty Chat Share definition Flag To engage in flirtatious and/or suggestive conversation via text messaging. Often sexual in nature. 1. Dude, that Puerto Rican chick I met at the DMV keeps nasty chatting me! Nasty Chat by Dante Jacusi March 24, 2007 0 0 Get merch Get the Nasty Chat mug. Buy Now — $32.95 See more merch