Knock, Knock! Who's there? D umbbell. Dumbbell who? Dumbbell doesn't work so I had to knock!
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.
One night, there was a knock on my door... i open it and no one was there every night I would get the same knock and still no one was there... Untill the morning I was just making myself some tea as a person knocks on my door it was a black man he walk in and stole my tea .... i said to myself did he just mug me .... I still didn't know who was knocking on the doors at night Untill one night I opened my door and there was a floating mug I was still confused.
Knock Knock. Who's There? Justin. Justin who? Your justin time to wipe my ass!
Knock knock. Who's there? Sarah. Sarah who? Sarah problem here?
"Knock, knock.Who's there?" very long pause... "Java."
"Have you heard my knock-knock joke?" asked the blonde. "No," said the brunette. "Okay," said the blonde, "you start."
Knock knock? Who's there? Hitler! Hitler who? You Know, the man who kills jews.
Fast way to screw up someone's Knock Knock joke...? "It's open."
Knock knock! Who's there? Yah! Yah who? Naaah, bro, I prefer google.
Knock Knock! Who's there? Zany Zany who? Zany body home?