The Number 1 book of Number 2 jokes!Open the door to meet a googly-eyed gang of creatures who realllllly need to go! Young readers will love knock-knocking on toilet doors to discover a joke that stinks behind every one.This easy-to-follow format is a pooptastic introduction to the world of comedy for little jokers, sure to have the whole family laughing like a drain.And for more hilarious knock knock fun:Knock Knock Who''s ThereKnock Knock Merry Christmas