How to Tunnel out of Prison

How to Tunnel out of Prison is a book about how to escape from prison by digging a tunnel.

History
Homer was in jail, charged with car theft. While he sat in his cell, Hans Moleman, the librarian, came in with a book cart and asked Homer if he wanted something to read. Homer looked at the books on the cart and picked out How to Tunnel out of Prison. Instead of starting a tunnel, however, Homer hit Moleman over the head with the book, knocking him out. Homer then took Moleman's place pushing the cart around and eventually simply walked out of jail.

Behind the Laughter

 * The scene with Homer, Moleman and the book is a reference to The Shawshank Redemption.