Here are some randomly selected joke topics
Knock Knock
Knock, knock.
Who's there?
Dewey.
Dewey who?
Dewey stay or do we go?
Doctors
Doctor, doctor, I keep thinking that I'm a bee.
Buzz off. Can't you see that I'm busy?
Pianos
Why was the piano player arrested?
He struck a chord.
Computers
Why was the computer feeling cold?
It had left Windows open.
Bookworms
Why did the bird fly into the public library?
It was looking for bookworms.
Peanuts
What is red in color and likes to eat peanuts?
An embarrassed elephant.
Dentist
How did the dentist become a brain surgeon?
His drill slipped.
Getting Old
You know you're getting old when the only gleam in your eyes is from the sun hitting your bifocals.
Roman
Which famous Roman general always had colds?
Julius Sneezer!