Collect them all in this awesome set of three Just Joking books from National Geographic Kids. This successful series delivers 300 laugh-out-loud knock-knocks, question-and-answer jokes, tongue twisters, and more in EACH book! Also included is a cool poster that is guaranteed to tickle the funny bones of kids everywhere. National Geographic Kids Just Joking Collector's Set is packed with three books of 900 silly jokes that kids love, paired with photos of laughing animals and funny people. Featuring National Geographic Kids' signature square trim size and candy-colored palette, each hilarious party-starter is perfect for tossing into a backpack to share with friends at school or camp. The set also includes a free poster that kids can hang in their room, locker, or anywhere they choose!