Here are some randomly selected joke topics
Candle
What did the big candle say to the little candle?
You're pretty bright for such a little guy!
Spaceman
What is a spaceman's favorite game?
Astronauts and crosses.
Scottish
A Scottish gift: "It's nae use to me, ye're welcome to it."
Cemetery
'Hi Bob, Where have you been?'
'The cemetery.'
'Oh! Who's dead?'
'They all are.'
Ghosts
What did the ghosts say to Santa Claus?
We'll have a boo Christmas without you.
Ghosts
When do ghosts like to play tricks on each other?
On April Ghoul's Day.
Karate
Did you hear about the karate champion who joined the army?
The first time he saluted, he nearly killed himself.
Cricket
Patient: Doctor, you must help me, I've gone crazy about cricket.
Doctor: How's that?
Patient: Not out!
Light Bulbs
How many statisticians does it take to change a light bulb?
One -- plus or minus three (small sample size).