In a similar vein of my prior post on Children's books, this one also involves a Princess. Unlike the last one though, this one does not obfuscate the blueness found within. Once upon a cool motorcycle dude involves a boy and a girl sharing a fairy tale. The girl brings in the princess, who for once isn't attacked by a dragon, while the boy brings in the strong hero.
Really, the book is good and quite funny. I would encourage you to get and read the book to your children.