Good Jokes

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

Joke: Why can't you hear a pterodactyl in the bathroom?

Joke: What is the only kind of nail carpenters don't like to hammer?

Joke: Why did the biologists fall in love?

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