Well, I definitely wouldn't go the braggart route, as I know that would just make me look worse and annoy people. Rather then telling them what I do, I would just continue to rationally argue my side and actually put my professional knowledge to the test. Telling people you have some 'big fancy job' just makes you look like you're grasping at straws for credibility in your opinion.

I'd say people debated this fairly calmly, considering. People could be a lot meaner... trust me.