Knock, Knock! Who's there? D umbbell. Dumbbell who? Dumbbell doesn't work so I had to knock!
Knock knock. Who's there? Urine. Urine who? Urine trouble if you don't open the door.
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.
Knock Knock! Who's there? Testicules. Testicules who? Pillow for penis .
Knock knock. Who's there? Kenya. Kenya who? Keeeenya feeel the loooove tonight?
Knock-knock. Who's there? To. To who? No, to whom.
Q: Why can't you tell blondes knock-knock jokes? A: Because they leave to go answer the door.
One day a man heard knocking at his door. He opened the door only to see a small snail sitting there smiling. The guy picked the snail up and threw it as far as he possibly could. Three years later he heard knocking at the door again. He opened the door to see the snail. The snail said, "What the hell was that all about?"
Knock-knock Who is there? A shattered penis with many diseases. What kind of illness? Gall, Aids, Gonorrhea, Syphilis... Enough, it is the best present for my mother in law.
Knock, Knock! Who's there? Doctor Doctor who? That's a great TV show, isn't it?
Knock knock. Who's there? Hatch. Hatch who? Bless you.