Knock Knock!: Over 1,000 Hilarious Knock-Knock Jokes for Kids, Funniest Laugh-Out-Loud Jokes for Kids 6 and Older by Highlights

Knock Knock! is the best book of knock knock jokes ever!
This hilarious, 352-page humor collection features more than 1,000 knock-knock jokes and cartoons covering lots of kid-friendly topics. Kids will love amusing themselves—and friends and family—with this ultimate knock-knock collection.