Here are some randomly selected joke topics beginning with the letter 'C'
Cross the road
Why did the horse cross the road?
Because he wanted to visit his neigh-bors.
Cross the road
Why did the calendar cross the road?
Because his days were numbered.
Criticism
Every young man should learn to take criticism. One day he'll probably be a parent.
Criminals
Did you hear about the cement truck that crashed into the prison bus?
They ended up with a bunch of hardened criminals.
Criminals
What do ghostly policemen do?
They haunt criminals.
Crocodiles
What do you call a sick crocodile?
An illigator.
Cross the road
Q: Why did the New Yorker cross the road?
A: What's it to you??!!!!!!!!!!!?