Long John Silver is a fictional pirate and one of the main characters in Treasure Island by Robert Louis Stevenson. Bart is supposed to give a book report on Treasure Island as a class assignment, but he doesn't read the book. When Mrs. Krabappel calls on Bart to give his report, he tries to fake his way through it. However, Mrs. Krabappel catches Bart out when she asks him to name the pirate in the book and Bart answers, "Bluebeard."