**Guaranteed to leave you in stitches!** If you can’t resist shouting out Who’s there? on cue, *The Everything Kids’ Knock Knock Book* is for you! Features hilarious sections such as: * Once Upon a Knock Knock * When Fun Comes a Knockin’ * Tied Up in Knock Knocks * Knock Knock Your Socks Off * Who’s That Knockin’? Packed full of puzzles, games, and activities, The Everything Kids’ Knock Knock Book proves that laughter really is the best medicine!