I was a newspaper reporter when the local cable channel asked me to interview an author. The interview went well enough, but when I watched it, I saw myself wrinkling my nose, far too often. It's not ordinarily a nervous habit, but it was for the duration of that interview.
And yes, a casual observer might see me check my fly on the way into a building. Or at least look down at my fly. But that's a good response to getting more forgetful about it in the last 10 years. Women in my workplace, I recall, were often looking down at themselves. At what, I don't think I ever learned, or even asked about.