On Suzy Share definition Flag When you have to swear on something more serious than God, so you swear on a cat named Suzy. Person 1: "Bruh i'm finna kill you in Smash!"Person 2: "On Suzy you ain't!" On Suzy by lil croissant August 13, 2019 0 0 Get merch Get the On Suzy mug. Buy Now — $32.95 See more merch