Has the world completely exhausted funny "knock-knock" jokes?
Here’s just a few of the chronicles of knock knock jokes out there:
• ’‘Knock Knock Jokes: Nothing But Clean Knock Knock Jokes’’
• ’‘Let us create the world’s largest collection of Knock Knock jokes’’
• And the book, The World’s Greatest Collection of Knock Knock Jokes
Are we there yet. Have we exhausted the supply, or can you make up one more that Google and Bing haven’t ever heard of?