Knock knock.
Who's there?
Urine.
Urine who?
Urine trouble if you don't open the door.
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Similar jokes
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One day a guy and a girl were making out in her parents' bedroom, and it was getting pretty steamy.
All of a sudden, the guy takes out his shlong and places it in her hand.
She screams and runs downstairs, through the kitchen, through the living room, the bathroom, the dining room, back upstairs, through her bedroom, her bathroom, her sister's bedroom, down the hall and back into her parents' bedroom.
"Listen, pal! I have two words for you -- DROP DEAD!"
"I have two words for you -- LET GO!"
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Fast way to screw up someone's Knock Knock joke...?
"It's open."
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What kind of a car does a proctologist drive?
A brown Probe!
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Q: What's the similarity between a woman and dog poop?
A: The older they get, the easier they are to pick up.
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Knock Knock.
Who's there!
Ice cream!
Ice cream who?
Ice cream if you don't let me in!
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"Have you heard my knock-knock joke?" asked the blonde.
"No," said the brunette.
"Okay," said the blonde, "you start."
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Knock, knock.
Who's there?
Kanga.
Kanga who?
Actually, it's kangaroo!
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Knock Knock!
Who's there?
Zany
Zany who?
Zany body home?
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Knock Knock.
Who's there?
Opportunity.
Don't be silly - opportunity doesn't knock twice!
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Three little old ladies were sitting on a park bench when a flasher came by in only an overcoat and opened it as wide as it could go.
The first little old lady had a stroke, the second little old lady also had a stroke, but the third little old lady couldn't reach.
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