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<p>I thought your own words were polite enough to use, so quoted them back to you above! </p>
<p>If said with kindness and warmth, looking someone in the eye with a gentle smile…I think they just might get it.</p>
<p>And, to be super mature, start with, “Thank you for asking, but, to be honest…”</p>
<p>PS, If they persist with a follow-up question, repeat your line word-for-word. Most people get it at that point. Two follow-ups? Shrug, smile and walk away. You tried.</p>
<p>Why 3 chances? It is important in life to distinguish between the well-meaning curiosity of those who love you, and the meddlesome nosiness of those trying to level or boss you around. :)</p>