Definitions by Michiko Profeit

thrillbilly 

A thrillbilly is one part hillbilly(cowboy, yokel, redneck, etc.), one part thrill-seeker. These redneck hybrids can often be found doing such things as snowmobiling, off-roading, big game hunting, all while wearing their cherished cowboy hats.

Bo&Luke Duke from Dukes of Hazzard are prime examples of a thrillbilly.

thrillbilly by Michiko Profeit April 28, 2006