Here are some randomly selected joke topics
Teachers
Teacher: "What is the outer part of a tree called?"
Pupil: "I don't know sir."
Teacher: "Bark, boy bark."
Pupil: "Woof-woof."
Elephants
What do you get if you cross a worm with an elephant?
Great big holes in your garden.
Skeptics
How many skeptics does it take to change a light bulb?
What makes you think a light bulb can be changed anyway?
Horses
Did you hear about the horse that has made over twenty movies?
He's not a star though, he just does bit parts.
Less
Knock, knock.
Who's there?
Maura.
Maura who?
Maura less.
Bicycles
What did the bicycle call its father?
Pop-cycle.
Tarzan
What did Tarzan say when he saw the herd of elephants approaching?
'Here come the elephants!
Girlfriends
When her boyfriend actually agrees with her, she lets him have his own way.
A Man
What do you call a man with a beach on his head?
Sandy.