In the popular sitcom Diff'rent Strokes, Gary Coleman portrayed Arnold Jackson, who would ask, "What'chu talkin' 'bout, Willis?" when he questioned or disagreed with anything his older brother, Willis would say. Arnold's quote became one of the greatest catchphrases in television history. Now, everyone will finally know the answer to the question when you wear this I'm What Willis Was Talkin' 'Bout Shirt!
