So, I am not going to disclose what nationality of people do this, but I am sure most of you can figure it out. They have a custom about being "clean" when they go to the bathroom. There are several people who have this custom where I work, and I see them doing this and it turns my stomach.
They walk into the public restroom and they go straight to the sink. Turn the water on, and lower their face down to right next to the sink and start splashing handfuls of water on their face. Then they will take their first finger and get it wet and brush their teeth with it. Then they blow their nose a couple times, but without any tissues, in high school we used to call these "snot rockets." Then they go into the stall and do their business.
Just think about the sink in a public restroom. Dozens or even hundreds of men everyday grasp their shafts and take a piss, many of whom probably haven't even showered that morning, and then they walk directly over and stick their hands in this sink. Who in the hell wants to lower their face anywhere close to that?? Much less touch the handle and then stick your finger in your mouth??
When I walk into a public restroom, I try to not even open my mouth. If someone talks to me, I will usually just nod. At work I have a water bottle that I fill up at the water fountain right next to the bathroom. If I need to fill the bottle and take a piss, I will make two separate trips rather than carry my drinking container into the bathroom.
On top of the fact that it makes absolutely zero sense to clean up BEFORE taking a shit, I find this entire custom to be revolting.