When Bart writes slogans on t-shirts, he catches the attention of Goose Gladwell, a gag gift entrepreneur, and soon becomes a t-shirt mogul. With Bart now the breadwinner, Homer feels he no longer has a place in the family. In order to feel more useful, Homer begins spending more time with Lisa, including watching documentaries by scholar Declan Desmond. But when Gladwell is revealed as a fraud, Homer steps in to show him who's really boss. Blackboard 'My pen is not a booger launcher'.