Get ready to ROTFL! The sixth book in this successful series delivers 300 new laugh-out-loud knock knocks, question-and-answer jokes, tongue twisters, and more! Silly jokes paired with photos of laughing animals and funny people areguaranteed to tickle the funny bone of kids everywhere!

Get ready to ROTFL! The sixth book in this successful series delivers 300 new laugh-out-loud knock knocks, question-and-answer jokes, tongue twisters, and more! Silly jokes paired with photos of laughing animals and funny people areguaranteed to tickle the funny bone of kids everywhere! NATIONAL GEOGRAPHIC KIDS inspires young adventurers to explore the world through award-winning magazines, books, website, apps, games, toys, television series and events and is the only kids brand with a world-class scientific organization at its core.