Funny knock knock jokes for kids :)
25 Hilarious Knock, Knock Jokes for Kids - Clean jokes that are funny!
Another great knock knock joke!
Lizard door knocker - Grant K. Gibson Knock knock
free lunch box notes for preschoolers | Knock Knock Lunchbox Jokes
24 New Knock Knock Jokes to use with your child when hanging out.
100 Funny Knock Knock Jokes For Your Kids: get ready for some laughter and fun with our collection of knock-knock jokes for kids!
"Knock, knock, knock, Penny…" But seriously, the first thing I thought of was Doctor Who. Knock, knock, knock, knock.
Best 40 Funny Memes Collection
Possibly The Best And Most Convoluted Knock Knock Joke Ever -- If only all Facebook comment threads were like this.