Here are some randomly selected joke topics
Steamrollers
Did you hear about the steamroller driver who ran over a biscuit?
He said, 'Crumbs.'
Light Bulbs
How many real men does it take to screw in a light bulb?
None. Real men aren't afraid of the dark.
Blondes
Q: Why do blondes like lightning?
A: They think someone is taking their picture.
Christmas
What are gnomes the most afraid of at Christmas?
That Father Christmas will give them the sack.
Thunder
Knock, knock.
Who's there?
Thunder.
Thunder who?
Thunder the table.
Programmers
Programmer - A red-eyed, mumbling mammal capable of conversing with inanimate objects.
French
Knock, knock.
Who's there?
Francis.
Francis who?
Francis where French people live.
Pop
What do you call a pop group made up of animal doctors?
Vet, Vet, Vet.
Newspaper
Which newspaper do cows enjoy reading?
The Daily Moos.