Here are some randomly selected joke topics
Laughs
He who laughs last is probably your boss.
Knock Knock
Knock, knock!
Who's there?
Water.
Water who?
Water you waiting for? Let me in!
Light Bulbs
How many Labour Party members does it take to change a light bulb?
None. They haven't got a policy on that.
Getting Old
You know you're getting old when instead of combing your hair, you start "arranging" it.
Elephants
Why do elephants have short tails?
Because they can't remember long stories.
Gnomes
Where do gnomes go to to get fit?
To an elf farm.
Peace And Quiet
Honk your horn if you like peace and quiet.
Cats
What kind of cats are good at 10-pin bowling?
Alley cats.
Doctors
Doctor, doctor! I feel like a sheep.
That's baaaaaad.