Jokes are a great way to encourage language building, reading, understanding of word play and to introduce a wide variety of cultural references. 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!