It depends who is asking and how old they are. If a too young or a kid asks, I will smile and make jokes to make them laugh while I don’t give them any answer. If an adult asks, different things can happen. Sometimes I directly and instantly say, “it is none of your business”. If the person doesn’t look that smart or rude, I do what I do when a kid asks the same question. It depends on many factors. I like the quote that says, “My behavior is different from my personality. My personality is what I am. But my behavior depends who you are.”
Thank you very much Vahid for your answer. I like your quote as well!