More than 100,000 copies sold! Any kid can be a comedian with a little help from award-winning author/illustrator Sandy Silverthorne's Crack Yourself Up Jokes for Kids . Perfect for kids ages 6-12, this zany collection of one-liners ( Did you hear about the missing barber? Police are combing the city. ), knock-knock jokes ( Knock, Knock. Who's there? Pizza. Pizza who? Pizza nice guy, don't you think? ), riddles ( What's red and goes up and down? A tomato in an elevator. ), puns, and funny lists represents some of the world's best clean humor. Add in the author's hilarious illustrations and cartoons, and kids will get hours of fun with the kind of laughs that make milk come out your nose--that is, if you're drinking milk while you read!