Here are some randomly selected joke topics
Varnish
How do you get rid of varnish?
Remove the 'r'.
Water
Knock, knock!
Who's there?
Anita.
Anita who?
Anita drink of water.
Television
Bill: I was on the television last night.
George: Were you?
Bill: Yeah. When I'm drunk I'll fall sleep anywhere.
Calendar
Did you hear about the man who stole a calendar?
He was sentenced to 12 months in jail they say his days are numbered.
Eat
Waiter, waiter, I can't eat this.
Why not, sir?
Because you haven't given me a knife and fork.
Soccer
How did the soccer field end up as a triangle?
Somebody took a corner.
Politicians
Redundancy: An airbag in a politician's car!
Windows
Windows: Just another pane in the glass.
Cows
Q: What do you call a cow that's just had a baby?
A: Decalfinated