Here are some randomly selected joke topics
Doctors
Doctor, doctor, I keep thinking I'm a snail.
Don't worry, we'll soon have you out of your shell.
Musicians
How many bluegrass musicians does it take to screw in a light bulb?
Two. One to screw it in and one to complain that it's electrified.
The Sun
Q: On what side of a building does the sun always shine?
A: The outside.
Thunder
Knock, knock.
Who's there?
Thunder.
Thunder who?
Thunder the table.
Boyfriends
You know your boyfriend is in love with you when he loses interest in his car for a couple of days.
Teachers
Where do mad teachers go to get trained?
Looney-versity.
Dogs
Brian: Yesterday my dog grabbed my dictionary and started chewing it. Fred: So what did you do?
Brian: I took the words right out of his mouth.
Door
Knock, knock.
Who's there?
Icon.
Icon who?
Icon make you open the door.
Baseball
Why is a game of baseball like pancakes?
Because they both need batters.