With 200 funny knock knock jokes like: Knock knock. Who's there? It´s Oink. Oink who? Dude - make up your mind already. Are you a pig, or are you an owl? Knock, knock. Who's there? Leaf. Leaf who? Leaf me alone! Warning: This book contains jokes for kids that not only will make any grown up burst out in laughter but will make any child's day a good day. Jokes for children is scientifically proven to make you and any child happier! Kids jokes are fun no matter what age you're in! Enjoy these jokes and riddles! This book contain 200 funny jokes for kids that any adult can enjoy laugh too as well! Remember, A laugh a day keeps the doctor away!