Bakers Gallon Share definition Flag A term to describe consuming 160oz of beer. If you are drinking 32oz beers, the 5th one would make a bakers gallon. After Boaz drank a bakers gallon of beer, he got another lap dance. Bakers Gallon by Bernard Bangwanger November 6, 2004 0 0 Get merch Get the Bakers Gallon mug. Buy Now — $32.95 See more merch