Board Thread:Off-Topic Discussion/@comment-5441128-20161002065443/@comment-28398720-20161012211742

It sounds a bit formal and can be annoying if you use it in every sentence, but no.

If someone wants to be offended, they'll certainly find a reason to be so. But no, it's not offensive to call a man sir or a woman ma'am. However, if someone tells you they prefer not to be addressed that way, please respect their wishes.

Good advice. Weird how this common sense need to be said now days.. it is like everyone have multiple idiosyncrasies and they are not afraid to show it.