Without looking up, I casually replied: “No, I just like pretty nails.”
Easier for me, as a woman: no one really notices. But... once I'd stopped at a rest area off the highway. Returned from the ladies' with my purse open, and got in the car. A man called out to me, "Ma'am, you dropped this,". It was my Oasis nail shaper. (If you've seen one, they're curved like this )( with four different shaping surfaces/grits. Don't look like a typical nail tool.)
Anyway, I took it and thanked him. He said, "What is it, anyway?" And I replied (not thinking very fast): "It's a nail file for classical guitarists,".
He stared at me a moment, then said, "Ask a stupid question..." and turned back to his car. LOL!