This game was fun, but there would always be one person who didn't want to play ball, and they would respond with something like:

"If I had three wishes, I'd wish for three more wishes".

Folks like this always thought they were being "clever", but it's a cliche we've all heard before and it makes the game boring. After all, this isn't about being witty or smart. The idea is you say what you wish for in life, and we get to know each other.

Now, back to job interviews:

Most interviewers -- I'd say 7/10 -- will ask you this question at some point:

"What's your biggest weakness?"

And way too many job-seekers (excluding the folks who've had some kind of coaching) will answer:
"My biggest weakness? Mmm... my colleagues say I'm too much of a perfectionist", or "I work too hard, and my friends say I should relax a little and not take my job so seriously".

This is just like the "too clever" kid who wants infinite wishes -- they're missing the entire point of the question. (And not making friends.)

Interviewers don't ask this question because they want to screen for "perfect" people who don't have weaknesses. Everyone has weaknesses.

They ask this because: (a) they want to get a feel for how self-aware you are; (b) they want to learn about how you deal with adversity; and (c) they want to screen out bullshitters.

What's the right way to deal with this question?

This is something I cover in extensive detail in Interview Success Formula, simply because it's such an important and fundamental concept you need to master in order to ace your job interview.