Knock-Knock. What's here? A knock-knock for every day of the year!
Knock-knocks are perennial favorites with kids, and they'll find more
than enough yuks on these pages to share with their family, friends, and
anyone else for a long time to come. They can try this one with their
teachers: "Knock Knock. Who's there? Dewey. Dewey who? Dewey have to do
our homework tonight? The librarian will like this one: "Knock Knock.
Who's there? Cohen. Cohen who? Cohen home after I return these books."
Adorable and energetic art adds to the fun.