Kids LOVE knock knock jokes, and this illustrated book by the New York Times-bestselling creators of the 'Happiness Is . . .' project will leave them in stitches! The World squo;s Best Knock Knock Jokes for Kids is filled with hundreds of corny, brilliant, and silly knock knock jokes edash; each paired with a small drawing thatosquo;s a sweet comic gem in itself. Itfsquo;s the perfect book for road trips, rainy days, or those special moments when kids and parents can laugh together.