Thugbilly Share definition Flag A cross between a "gangsta" or "thug" and a "hillbilly". Most often seen in rural areas heavily populated by confused youth. Dude, check out the thugbilly blasting 50 Cent in his jacked up '78 Ford. Thugbilly by Yammy152 August 10, 2007 0 0 Get merch Get the Thugbilly mug. Buy Now — $32.95 See more merch