Celebrate Halloween with this book of knock-knock jokes that features fun googly eyes on every page Knock-knock on the door and reveal a new trick-or-treat visitor with every turn of the page — each with their own joke to tell and wearing a silly costume. This easy-to-follow format is a fun introduction to the world of comedy for little jokers, and you’re sure to be laughing along with them. On the final page, there’s one last spooky surprise that’s sure to get young readers in the mood for Halloween! Why Choose This Book? Children will love telling their first jokes and making their friends and family laugh. Fun, novelty format with googly eyes that jiggle when you wiggle the book. Classic knock-knock joke format is easy for little ones to understand. Fun and not too scary, this accessible first joke book is the perfect Halloween treat!