Answer:
What is the cleanest language in the world?
What do you call a fairy that has not taken a bath?
What did the left hand say to the right hand after the test?
Some are clean and some are dirty, but all are meant to get a chuckle. Most like it, some takes offense from it.
What can travel around the world while staying in a corner?
When is it bad luck to see a black cat?
Funny
Animal
Difficult
Easy
Food
Kids
Logic
What am I?