Here are some randomly selected joke topics
Cows
What do you call an Eskimo cow?
An eskimoo.
History
History does not repeat itself; historians merely repeat each other.
The Police
Knock, knock.
Who's there?
Dishes.
Dishes, who?
Dishes the police. Open this door!
Goats
Doctor, Doctor, I keep thinking I'm a goat.
And how long has this been going on?
Oh, ever since I was a kid.
Polar Bears
Hear about the polar bear who tried to eat a penguin?
He couldn't get the wrapper off.
Cannibals
A sign over a cannibal's hut: "I never met a man I didn't like."
Snowmen
What do snowmen eat for breakfast?
Snowflakes!
Waiters
Waiter, waiter, there's a small fly in my soup.
I'm sorry, sir. Shall I get you a bigger one?
Policemen
Old policemen never die, they just cop out.