Here are some randomly selected joke topics
Cholesterol
What do you call an overweight ET?
An extra cholesterol.
The Bell
Knock, knock.
Who's there?
Ammonia
Ammonia who?
Ammonia little girl and I can't reach the bell.
Office
"I'll never forget the time they gave me a farewell party at work. I was so surprised, I didn't even know I had been fired."
Santa
Why is Santa looking for a new job?
Because he got the sack.
Doctors
Knock, knock.
Who's there?
Sara.
Sara who?
Sara doctor in the house?
Lawyers
What are lawyers good for?
They make used car salesmen look good.
Knock Knock
Knock knock,
Who's there?
Kermit.
Kermit who?
Kermit a crime and you will go to jail.
Idiot
Did you hear about the idiot who buried his car battery when the auto mechanic told him that it was dead?
Doctors
Doctor, doctor, I feel like I'm part of the Internet!
Well, you do look a site.