Here are some randomly selected joke topics
Knock Knock
Knock, knock!
Who's there?
Water.
Water who?
Water you waiting for? Let me in!
Skeletons
What does a skeleton like to order in a restaurant?
Spareribs.
Marriage
My brother said to this girl, 'Would you like my hand in marriage?'
The girl said, 'Alright, but who's getting the rest of you?'
Lunch
Knock, knock.
Who's there?
Justin.
Justin who?
Justin time for lunch.
Nurses
My friend just fell in love with the head nurse at the hospital where he is - I guess you can say that he's taken a turn for the nurse!
Less
Knock, knock.
Who's there?
Maura.
Maura who?
Maura less.
Tact
Tact: The unsaid part of what you are thinking.
Succeed
If at first you don't succeed, try management.
Ghosts
What is a ghost's favorite type of bird?
A scare-crow.