Things to keep in mind.

Bryan notes, "There is just no socially acceptable situation in which a person may smell their fingers in front of another person." On a related note, I've long tried to remind myself (though sometimes forget) that there is virtually no grooming activity that should be done in public—at least, if you want to look like you have your shit together. This includes, but is not limited to, combing air, picking the nose, biting fingernails, pulling off dead skin, popping zits, applying deodorant, flossing, and (men) adjusting yourself. There is, however, one notable exception (which Bryan raised as we were having this discussion at the bar): Women applying lipstick. Yeah, that works.