They say you should never judge a book by its cover. Screw that. Sometimes your judgement from a book's cover is dead on and the only thing saving you from the vomit inducing dribble inside. We've shown you The 20 Worst Children's Book Covers, but there's so many more terrible book covers out there to mock. Some of these have terrible titles, others bad artwork, but make no mistake, they're all terrible in their own special way.