Here are some randomly selected joke topics
Dentist
What do you get if you cross a dentist with a ship?
The tooth ferry.
Dogs
Why did the dog run after the duck?
Because everyone kept telling him to get down.
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.
A Born Loser
A born loser: Somebody who calls the telephone number that's scrawled in lipstick on the phone booth wall -- and his wife answers.
Shoes
What kind of shoes are made from banana skins?
Slippers.
Armageddon
Knock knock.
Who's there?
Armageddon.
Armageddon who?
Armageddon out of this place.
Doctors
Doctor, doctor, I keep thinking that I'm a bee.
Buzz off. Can't you see that I'm busy?
Boxers
This trainer came up to this boxer. He said, 'Are you ready for another fight?'
The boxer said, 'Just a bout.'
Life
If you think life's a joke, tell me the punchline