Jam-packed with hilarious knock knock jokes, this book has something guaranteed to tickle anyone''s funny bone! Kids love knock knock jokes - the question and answer format means they are perfect to share with friends - and with over 600 jokes and over 250 humorous cartoons, hours of fun are guaranteed. Children aged 7 and up will love making their friends and family laugh! ABOUT THE SERIES: Arcturus Amazing Joke Books bring together collections of side-splittingly funny jokes, from witty wise cracks to knock knock jokes and shaggy dog stories, accompanied by hilarious cartoon illustrations.