Knock, knock. Who's there? Don't get so excited, it's just a joke. Knock, knock. Who's there? Anita to borrow a pencil. New from Zonderkidz, here's a collection of knock-knock jokes that is both hilarious and wholesome. Lots of Knock-Knock Jokes for Kids is sure to send every kid you know to his knees in a breath-stealing, side-splitting, uncontrollable fit of giggles. It's that funny. And with more than 350 jokes, the laughs are sure to never quit. This collection provides fun for the whole family and includes bonus Q A jokes and riddles too!