"Dad Behavior" is the eighth episode of the twenty-eighth season of the American animated television series The Simpsons, and the 604th episode of the series overall. It first aired on the Fox network in the United States on November 20, 2016. The plot revolves around Homer discovering an app that makes his life easier, and Grampa learning that he's about to become a father again. It was the first episode to be written by Ryan Koh, and was directed by Steven Dean Moore. Matt Leinart makes a guest appearance as himself.