Fat Man and Little Boy (The Simpsons)

Eric Idle as Declan Desmond

"Fat Man and Little Boy" is the fifth episode of the 16th season of The Simpsons. It originally aired on the Fox network in the United States on December 12, 2004.

After attacking Lisa with spitballs, Bart finds out his last baby tooth is loose. After some failed attempts in pulling it, Bart's tooth comes out when Marge forces a drawer open. Bart puts his tooth under his pillow for the Tooth Fairy and in the morning, he finds a note saying the Tooth Fairy made a donation in his name to the United Way of America. He soon begins to realize that he is not a child anymore. After deciding that his childhood is over, Bart puts his toys into a small boat and sets it on fire, a proper "Viking funeral".

Lisa tells Bart that she writes things when she feels depressed. Bart does so and begins writing things on his T-shirts with marker pens. They become popular around town, and when Milhouse wants one, Bart uses this as a business opportunity and draws on more of his shirts with pens, which he charges people to buy at a stand outside his house. The shirts are a success until the police confiscate them because he has no license. Bart takes his shirts to a retailer's show in order to get a license, but his display is destroyed by Krusty the Clown's massive stand, which sells Itchy & Scratchy T-shirts. While leaving, Bart is run over by Goose Gladwell, a Willy Wonka-type salesman who sells weird items. He looks at Bart's shirts and decides to sell them in most of his 20 stores which are in 30 states. The shirts are fast sellers and Goose gives Bart enough money to support the Simpson family income. The family structure is soon reversed when Homer gets fired by Mr. Burns (thanks to wearing one of Bart's T-shirts) and asks Bart for $200 to pay the $100 bill for their dinner in a restaurant and for breaking some bathroom fixtures there.