a 20 pinter Share definition Flag A 20 Pinter is the amount of alcohol that it would take before trying to seduce a person that you do not fancy at all. "Hey mate she is staring at you" Are you serious she is at least a 20 Pinter" a 20 pinter by Original igloo August 19, 2020 0 0 Get merch Get the a 20 pinter mug. Buy Now — $32.95 See more merch