King of the Hill - Season 2 Episode 16
Traffic Jam

After Hank has a car accident, he has to go to traffic school. The teacher of the traffic school is a comedian, Booda Sack, who gets laughs by insulting the audience. Inspired by Booda Sack, Bobby tries developing a stand-up act of his own. Booda Sack tells Bobby that to be funny, he needs to get in touch with his roots as a white man. Looking for something about "white roots" on the internet, Bobby comes across all the material he needs on a site called the White Nationalist Brotherhood.