Awkward situations

Sometimes you are faced with strange situations where you don't know how to react.

- In Germany I was having lunch at cafeteria. 2 German gals came and sat on the same table. Germans always speak in German language amongst themselves. But these 2 gals started talking in English, amongst themselves, and were discussing Hindi movies and Shahrukh Khan. I kept thinking what to say, but ultimately did not say anything and got up and left quietly after 10 minutes.
- Once while in US, while travelling from bus I was not having change for 50 dollars bill for tickets. Neither did the driver had any change. I asked everyone in the bus for change but no one would have. A poor looking person came and took tickets for us himself and gave us. He would not take 50 USD bill. We kept asking the persons who would board bus on intermediate stops for it. Ultimately we got it. I walked at the front of the bus where that gentleman was sitting and gave him 4 USD for which he had bought out tickets. Fellow passengers misunderstood it and started giving him money. As I said he was poor looking. I felt bad as I made him look a beggar but he himself was laughing and taking all the money.
- After i came back to India from US, one of my ex-colleague in US started emailing me about how a woman..with whom I was also working is trying to flirt with him..and wants to do much more. What could I reply..so I stopped replying to his emails.