Here are some randomly selected joke topics
Doctors
Patient: Doctor, what is the best way to prevent diseases which are caused by biting insects?
Doctor: Don't bite any.
Hockey
Which monks play in the National Hockey League?
The Philadelphia Friars.
Christmas
Q. What's red and white and gives presents to good little fish on Christmas?
A. Sandy Claws.
Doctors
Patient: I have a splinter in my finger.
Doctor: Well, that's what you get for scratching your head.
Stomach
Patient: Doctor, my stomach hurts!
Doctor: Oh stop bellyaching!
Spaceman
What do you call a crazy spaceman?
An astronut.
Yodel
Knock knock
Who's there?
Little old lady
Little old lady who?
Gee, I didn't know you knew how to yodel.
Judge
The judge said to the dentist: "Do you swear to pull the tooth, the whole tooth, and nothing but the tooth?"
Cashiers
How many grocery store cashiers does it take to screw in a light bulb?
Are you kidding? They won't even change a five dollar bill.