Watch Barney trick Fred... I mean, Homer out of his Duff Beer.
At the Duff Beer Company, executives are hard at work discussing the direction of their new ad campaign. One of them eventually suggests that they take a "survival of the fittest" theme, in which two average men are to match wits.
Homer Simpson and Barney Gumble are picked to star in a series of sketches in which Barney tries to steal Homer's supply of Duff Beer using outlandish disguises and repeatedly failing before finally settling on knocking Homer out with a wooden board. As the Simpsons watch the commercial and Homer boasts on his performance, Barney peers out from nearby with Homer's beer in his eyes.