Answer:
Why are there no living cats on Mars?
Why was the leader of al-qaeda moody, frustrated, angry and easily annoyed?
Why are ghosts bad liars?
Some are clean and some are dirty, but all are meant to get a chuckle. Most like it, some takes offense from it.
What animal gives away money and says moo?
What made Cyclops quit teaching?
Funny
Animal
Difficult
Easy
Food
Kids
Logic
What am I?