PICTURE STORYBOOKS. Worm and his friend Tail receive a letter in the post that changes their lives. An irreverent tale about getting rich. I am a worm, of humble means. I live in a hole, and eat baked beans! Roger Hargreaves was the bestselling creator of the Mr Men series. Once Upon a Worm was first published by Hodder Childrens Books in 1982. Ages 0+