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. Boys and girls will laugh their way through their special day with Happy Birthday Mad Libs. Whether you're singing "Happy _________- day to You" or playing Pin the Tail on the __________ , a birthday with Mad Libs is sure to be unforgettable! Great for Travel. 8+ years.