1. No.

2. Maybe.
Note that "Yes" is not an option. You can always be in doubt. You can ALWAYS be wrong. You can't always be right or definite. "Maybe" is a much better answer than definite "yes" because then when you're wrong, you can say "I never definitely said 'yes...'"

3. 42.
As all Hitchhikers know, this is the answer to Life, the Universe, and Everything. Don't leave your home unless you know this and are prepared to apply it.

4. Cheese Omelette.
Any good Physics teacher will tell you that for edible substanance, you can't beat a good Cheese Omelette.

5. What?
This is only in here because often you will not hear something, and "What?" is a better answer than "maybe." It is also applicable as a stall tactic as you think of the rest of these answers to determine which would be best in the situation.

6. I don't know.
Because often you don't. It takes a smart man to acknowledge and admit what he doesn't know. There is no shame in admitting an ignorance. To allow it to remain one is shameful.

7. Because I said so..
It worked for your parents, why not for you?

8. Because I don't want to.
Honestly, what better reason would you need?

9. Fuck off.
Never underestimate the power of telling somebody to fuck off. This is an especially good answer to the question, "Would you like some literature to read about (insert religion here)?"

10. C.
When in doubt...

11. African or European?
This just may save your life. Remember it well...

12. What are you, some kind of racist?
This is the ULTIMATE answer. It is also very powerful. This is not an answer to use every day. This is not an answer to use unless you're privy to its origin. In fact, this is not an answer to use unless you know what WDTSF means. I inlcude it here only in the interest of completeness.

13. Sex.
In today's world, you can't go wrong with this answer. Everything is okay if it turns on someone important. Sex sex sex.

On a side note (and a closing one, I suppose) I can't tell whether this is a joke or not...