I know that I am a younger member here and I have a lot to learn from my fellow travellers and in general most people on this planet. Here's my two cents on this matter even though I was unable to view this conversation and do not know the specifics of this conversation.
In general as Mark Mayo mentioned earlier when he was a Mod for this site, we must try to maintain our appropriation and etiquette. Getting into bad mouthing only makes matters worse.
As travellers this is of prime importance to us and not losing our cool is a mark of respect even if you feel respect is not deserved in the current situation.
Getting into misunderstandings and snide remarks is something which often happens on the internet and having lived in a city where this is more common than other places I realise that this can have severe unintended results.
So let's keep our integrity and handle the situation in the calmest manner possible.
If you feel you are making a reply which can be taken offensively, DON'T. Statements on the internet can be taken offensively very quickly and I personally try to avoid any personal comments about anyone, jokes or not.
Let's make the internet a calm and happy place where people come to share their interests with those in different areas of the world.
If you find that someone has made a comment which is or can be viewed in an offensive manner, suggest them to revise their comment and prevent fights. If the user insists on being offensive, flag them. Flags are good, but give the user a chance to revise and explain and regain their cool before you take decisions which would involve moderators.