Here are some randomly selected joke topics
Cat
What do you get if you cross a cat and a pair of wellingtons?
Puss 'n' boots!
Police
Police move in book case
Television
Knock knock!
Who's there?
Watson.
Watson who?
Watson television tonight?
Work
Knock, Knock.
Who's there?
Bach.
Bach who?
Bach to work.
Clocks
This bloke said to my brother, 'I think I'm a clock you know.'
My brother said, 'Well don't get wound up about it.'
Cannibals
What's a cannibal's favourite meal?
Baked human beans.
Christmas Trees
Why are Christmas trees just like bad knitters?
They both drop their needles.
Nose
How do you stop your nose running?
Hide its trainers.
Ducks
What happens when ducks fly backwards?
They quack up.