Ennis Hofftard (voiced by Will Arnett) is the bodybuilder who teaches English. His catch phrase is, “Catch phrases are for losers.” Always in cycling gear, he appears to be one of the dumber faculty members of Knob Haven High. He is a self-proclaimed womanizer who takes great pride in working out and keeping his body in top-notch shape. Ennis Hofftard is one of the characters in the Fox animated series Sit Down, Shut Up, based on a short-lived Australian sitcom of the same name. It revolves around a group of “ambivalent if not just plain crazy” faculty at a small town high school in Knob Haven, Flrida. The show is part of the network’s animation lineup that includes The Simpsons, Family Guy, and American Dad.