Another thing to remember

Another thing to remember here is that this is a stress question. It’s not designed to specifically gather information about weaknesses. It is designed to throw you off balance. With that in mind, all you have to do is answer calmly with perhaps a smile or a little chuckle, as if you are shrugging it off.

Sometimes stress questions are very bizarre and seem not to relate to the interview at all:

QUESTION: Why is there fuzz on a tennis ball? Either of these answers, said with a smile, would be fine:
ANSWER: Good question.
ANSWER: That’s certainly one to think about! Other, fairly silly questions that are designed to make you think they are “deep” and to throw you off are:
QUESTION: What’s your favorite color, and why?
QUESTION: If you could have dinner with anyone, who would it be, and why?
QUESTION: What’s your favorite animal, and why?

If the interviewer asks you these questions, you can at least be assured that he or she is considering you as a serious candidate for the job. You really can’t win with these questions, other than to say:
ANSWER: No, I don’t object to testing of any kind.

If you do object to being tested, you might want to look for some other target companies that do not employ these practices. In Chapter 10, you’ll be able to read an entire interview, from start to finish, so you’ll get an excellent idea of how stress questions (and their answers) fit into the larger scheme of things. You’ll also get a sense of the flow and rhythm of the entire conversation.

Taken from : Fearless Interviewing - How To Win The Job