Mad Libs books contain short stories on each page with many key words replaced with blanks. Beneath each blank is specified a category, such as "noun", "verb", "place", "celebrity," "Exclamation" or "part of the body". Fill in all the blank spaces appropriately and then the completed story is read aloud. The result is usually comic, surreal and somewhat nonsensical. "Every stinky spy needs a pair of X-ray baseballs, an invisible penguin, and a spy mobile equipped with all the most silly features!" Sounds like someone has been playing Spy Mad Libs! Play them with friends or enjoy them by yourself! Great for travel. 8+ years.