Bourbon biscuit Share definition Flag A new insult to discreetly say " you are a bitch/slag/slut" ect. Mum: *takes phone*Me: you are such a bourbon biscuitMum: what the f- Bourbon biscuit by The Bi bitch May 12, 2022 0 0 Get merch Get the Bourbon biscuit mug. Buy Now — $32.95 See more merch