Something interesting I noticed while traveling this past week: Men at airports tend to wash their hands after using the bathroom. I find this amazing, as most of the time in public restrooms, guys will handle their junk, and just walk right out. (eiw) At the airport, even with the added inconvenience of lugging around luggage, most guys would take the time to wash their hands.
I have no idea why that was the case, but it was significant enough that I noticed. And appreciated it.