Here are some randomly selected joke topics
Bees
What goes "zzub, zzub"?
A bee flying backwards.
Lawyers
Talk is cheap until you hire a lawyer.
Doctors
Doctor, doctor, I think I've gone a funny color.
Nonsense, it's just a pigment of your imagination.
Computers
What do you call a computer superhero?
A Screen Saver.
Free
Why, if the best things in life are free, the next-best things are so expensive?
Watchman
Bill: I hear that work as a night watchman. What do you watch?
Ben: I don't know. It's so dark I can't see a thing.
Executive
He is a born executive . . . his father owns the business.
Ghosts
Did you hear about the baby ghost who applied to join the football team?
He heard the manager say that they were in need of a little team spirit.
Break
What is the only thing you can break when you say its name?
Silence.