Cracked.com presents: The 40 Most Inappropriate Children's Book Covers.
While some of them are kind of lame (okay, anal sex is funny, we get it), there's also some pretty funny ones.
I'm partial to "The Invisible Child-Eating Crocodiles That Live Absolutely Everywhere," and "You Can't Be An Astronaut! (It's just not realistic!)," but I think my favorite is this one: