Here are some randomly selected joke topics
Students
A student who changes the course of history is probably taking an
exam.
Husbands
Many a poor husband was once a rich bachelor.
Frozen
What is white, cold and very quiet?
A frozen silence.
The Sea
Jill: You remind me of the sea.
Jack: Because I'm wild, unpredictable and romantic?
Jill: No, because you make me sick.
Astronauts
Why is an astronaut like an American footballer?
They both like to make safe touch-downs.
Doctors
Doctor, doctor, I keep thinking I'm a bottle of gin.
I think you need a little tonic.
Animals
What type of animal is no fun at a party?
A boar!
Christmas
How do sheep greet each other at Christmas?
A merry Christmas to ewe.
Road
What's that up the road? A head?