Not today, Jason Share definition Flag A phrase to say affirmatively when you are about to call Jason and you remember that you’re mad at him. Jason just popped into my head. Should I call him? NAH! Not today, Jason! Not today, Jason by CallMeMaybe3435 February 6, 2022 0 0 Get merch Get the Not today, Jason mug. Buy Now — $32.95 See more merch