When someone asks me how old I think they are my answer is invariably, "18. Give or take a day."
It always makes them smile.
The question I dread the most is, "Are you OK?"
What seems like an innocent question about the status of someone's well-being actually contains several properties of assumption and insinuation.
By asking me you are doing several things:
First you are indicating that I am in a state that is not 'ok' and therefore invalidating your question from the beginning. Whatever external stimulus prompted the asking of the question can reasonably be construed as evidence of one 'not being ok.'
Second you are indicating that I am incapable of recognizing this particular state that lacks my well-being, and thus indicating that I am incapable of a plethora of other things, including personal maintenance.
Third the question is too general to be polite, creating a lack of commitment in its asking and a lack of commitment to doing anything if the answer is averse.
Fourth, as part of the third bit, is that because of its generality this question is a terror to answer. If you say 'yes' then you are lying, and that is wrong, and if you say 'no' you may be leaving yourself open to being ignored, hurt again, or worse, helped by someone you didn't want to help you.
Of course, that is just my interpretation of the question, and I fully recognize that at any time the person asking it could be genuine and sincere in their commitment to helping the person in question.
I just feel that it is very unlikely that I know any of those good people.