Knock knock.
Who's there?
Sarah.
Sarah who?
Sarah problem here?
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Similar jokes
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Knock-knock
Who's there?
Fuck.
Fuck who?
You.
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Knock-Knock
Who is there?
A long penis with a naked head.
Come in please we were waiting for you.
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Did you hear about the guy who invented the knock knock joke?
He won the "no-bell" prize!
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Knock Knock.
Who's there?
Opportunity.
Don't be silly - opportunity doesn't knock twice!
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Knock, knock!
Who's there?
Spell.
Spell who?
W-H-O.
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Chuck Norris was once part of a knock knock joke.
The Joke ended abruptly when after the first knock the door blew up killing the man behind it.
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Knock, knock!
Who's there?
Opportunity!
That is impossible. Opportunity doesn't come knocking twice!
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Knock knock.
Who's there?
Urine.
Urine who?
Urine trouble if you don't open the door.
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Knock knock?
Who's there?
Hitler!
Hitler who?
You Know, the man who kills jews.
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Fast way to screw up someone's Knock Knock joke...?
"It's open."
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