Here are some randomly selected joke topics
Wives
Joe: Your wife is pretty old.
Bob: Thank you. She was even prettier when she was younger.
Fly
"Waiter, there's a fly in my soup!"
"I'm not surprised, sir, our chef used to be a tailor."
Teachers
Teacher: I wish you’d pay a little attention to what I'm saying!
Pupil: I'm paying as little as I can!
Bankers
What is the difference between a banker and a vampire?
A vampire only sucks blood at night.
Christmas
Why does Father Christmas go down chimneys?
Because they soot him.
Maths
Why was the maths book looking so sad?
Because it had so many problems.
Absentmindedness
There are two things I dislike in a person -
Absentmindedness and... I can't remember the other one.
Doctors
Doctor, Doctor I've just swallowed a pen.
Well sit down and write your name!
Pigs
Knock, knock
Who's there?
Pig
Pig who?
Pig on someone your own size!