I almost fell for this scam in India. Two guys approached us and seemingly helpfully told me that he saw something fly in my ear and wanted to help. Before I could say anything he had grabbed my ear lobe and produced a metal instrument to which my wife shouted ‘stop’. I pulled away and adopted a somewhat defensive stance which made the guy step back but continue to say he wanted to help. After this we ignored them and carried on. I searched for this and it is a well known scam that I missed when doing my pre-trip research – typical! If you fall for it the magically produce something that was apparently in your ear and expect a tip.