Knock, knock.
Who's there?
Cash.
Cash who?
No, thanks, I prefer pistachios.
Here are some randomly selected joke topics
Blondes
Q: How many blondes does it take to play Hide and Seek?
A: One.
Ghosts
What is a ghost's favorite type of bird?
A scare-crow.
Cats
Why did the cat move to a new neighborhood?
Because the old one had gone to the dogs!
Policeman
What did the policeman say to his belly-button?
You're under a vest.
Ghosts
Did you hear about the ghost who works at Scotland Yard?
He's the Chief in-spectre.
Coffee Beans
Why couldn't the coffee bean go out to play with his friends?
He was grounded.
Santa Claus
How does santa begin a joke?
"This one will sleigh you...."
Bees
What goes zzub zzub?
A bee flying backwards.
Cats
What do cats like on their hot dogs?
Mouse-tard.