chissy Share definition Flag Angry. You normally say it while you’re rubbing your chin annoyingly. It makes the angry person angrier. Oooh, chissy! You know my team has been pumped up ever since their shock loss to your team. chissy by Jamie Mackenzie June 20, 2007 0 0 Get merch Get the chissy mug. Buy Now — $32.95 See more merch