Here are some randomly selected joke topics
Light Bulbs
How many real men does it take to screw in a light bulb?
None. Real men aren't afraid of the dark.
Fleas
What do you get if you cross a flea with a rabbit?
Bugs Bunny.
Friendly
Knock, knock!
Who's there?
Cat's purr.
Cat's purr who?
Cat's purr the friendly ghost.
People
Who do you call the two people who cause the most embarrassment at the annual school parents' evening?
Mum and dad.
Witches
What do you call a witch who lives at the beach?
A sand-witch.
Computers
I haven't lost my mind it's backed up on tape somewhere.
Exam
What is black and white and hard all over?
An exam paper.
Thief
What did the thief say when he robbed the glue factory?
This is a stickup!
Spoken
"I haven't spoken to my wife for almost 25 years."
"Why not?"
"She doesn't like being interrupted."