Answer:
How did the computer get drunk?
Some are clean and some are dirty, but all are meant to get a chuckle. Most like it, some takes offense from it.
What has 4 eyes but cannot see
In the Tour de France, what is the position of a rider, after he passes the second placed rider?
There was a plane crash and every single person died. Who survived?
When is it bad luck to see a black cat?