"Knock-Knock Jokes for Funny Kids is packed full of the most hilarious knock-knock jokes and side-splitting illustrations that funny kids can enjoy and share.Part of the Buster Laugh-a-Lot series, this hilarious book is filled with over 200 seriously silly knock-knock gags. A laugh-out-loud collection that will keep jokers entertained for hours on end. Designed to be easy to read, there are also hilarious illustrations for extra laughs"--Publisher's website.