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What is a good knock knock joke?

Answer:
This is a decent one- Knock Knock Who's there? Interrupting Cow Inter..... MOO!

The ever popular joke of Jeff dunham-

Knock knock?..... Who's there?...... It's me, I love You!!!
lol thatz a good one kassidy- Porsha:)
Dc11's
Knock Knock
Who's There?
Me! I kill You!
First answer by WikiRicki. Last edit by Dc11. Contributor trust: 2 [recommend contributor recommended]. Question popularity: 4 [recommend question].