Super Knock-knocks

Some super serious silliness has come to call. No need to check the peephole to identify these visitors - just ask! Knock-Knock. Who's there? Beagles. Beagles who? Beagles and cream cheese. Or, Knock-Knock. Who's there? Clark Kent. Clark Kent who? Clark Kent come, he's sick. And remember this classic: Knock-Knock. Who's there? Denise. Denise who? Denise is de sister of de nephew. This book helps you share the laughs with parents and friends!