Hillbillarious Share definition Flag A redneck using tongue in cheek humor, despite a full mouth of chaw. It was Hillbillarious how they named it toothpaste - that fits South Carolina to a T. Hillbillarious by Pastor Agnostic February 18, 2015 0 0 Get merch Get the Hillbillarious mug. Buy Now — $32.95 See more merch