Short Jokes

Joke: Knock knock!
Who's there?
Europe!
Europe who?
No! You're a poo!

Joke: Tell me the symbol for Nobelium!
No.
Why?
Yttrium.
Oh!
Oxygen!

Joke: A police officer came to my house trying to tell me my dog was chasing a kid on a bike.

I told him, "My dog doesn't even have a bike."

Joke: Knock knock!
Who's there?
Theresa!
Theresa who?
Theresa courier for you!

Joke: Knock knock!
Who's there?
Ben.
Ben who?
Ben knocking for ten minutes!