Three Hatter Share definition Flag When you have to use your hat to wipe your ass after shitting in the woods or side of road. As Gill finished his shit, he screamed from the bushes, it's a three hatter. Three Hatter by MATTSLAPPY17 September 7, 2017 0 0 Get merch Get the Three Hatter mug. Buy Now — $32.95 See more merch