A type of insult, this is a shorthand way of saying what a character is not capable of. The implication is that, if a certain person were to write this book, it would have little or no content because they can't do what the title says. These are typically cruel to the purported "author", which is why we're limiting this to appearances in works of fiction. Contrast Wrote the Book. Should be limited to examples that appear in fiction. Examples of World's Shortest Book include: