25 Knock, knock jokes that kids will LOVE!
Another great knock knock joke!
24 New Knock Knock Jokes to use with your child when hanging out.
free lunch box notes for preschoolers | Knock Knock Lunchbox Jokes
In Big Bang theory, Sheldon does this thing!!:) penny! *knock* penny! *knock* penny! Love that show!!!!:)
100 Funny Knock Knock Jokes For Your Kids: get ready for some laughter and fun with our collection of knock-knock jokes for kids!
love the patina; possible background - patina wood? White washed wood?
Dishfunctional Designs: Knock Knock: Who's There? Awesome Antique Door Knockers
Dragon Door Knocker