"Please Homer, Don't Hammer 'Em..." is the third episode of "The Simpsons"’ eighteenth season. It first aired on the Fox network in the United States on September 24, 2006. In this episode, Marge learns carpentry, but uses Homer as a front when she wants to make money off her talents since no one in Springfield believes that women can be carpenters. Meanwhile, Principal Skinner and Bart fight each other when Bart discovers that Skinner is allergic to peanuts and Skinner discovers that Bart is allergic to shrimp.