The doctor comes in and tells his patient he has some good news and some bad news. The good news is that you don't have cancer, the bad news is that you have short-term memory loss.
Then the patient says, "But do I have Cancer?"
Here are some randomly selected joke topics
Cats
And now spell mousetrap in three letters.
C, A, T
Marriage
Their marriage is based on trust and understanding.
She doesn't trust him, and he can't understand her.
Lunch
Knock, knock.
Who's there?
Harriet.
Harriet who?
Harriet my lunch so now I'm hungry.
Waiters
Waiter, waiter, there's a twig in my soup.
Well you did order bird's nest soup, sir.
Fish
What type of fish performs surgical operations?
A sturgeon.
Lawyers
Q: What do you call a lawyer who doesn't chase ambulances?
A: Retired.
Shoes
What kind of shoes are made from banana skins?
Slippers.
Offices
Ultimate office automation: networked coffee.
Ghosts
What do short-sighted ghost wear?
Spooktacles.