[notapenny]

This is anecdotal of course, but I've addressed people as Sir and have been addressed that way it's always in a friendly way. Usually it's just a sign of respect, you may think they're mocking you but they might just see you as one of the "old crew". It may even be a cultural thing, I've noticed that a lot of my Indian colleagues tend to use it as well. Anyway, when in doubt I'd just ask, otherwise next time someone does it just joke back that if they're calling you Sir, you should probably call them Mr. President, if the response is casual enough it's all good.

[codingbbq]

Thank you, you are right. Instead of being stressed about it, I should rather ignore it.