Sitting for a pee was one of most unexpected and difficult cultural barriers I had to deal with when I lived in Germany. My German flatmates were very serious

Sitting for a pee was one of most unexpected and difficult cultural barriers I had to deal with when I lived in Germany. My German flatmates were very serious about it, and most houses I visited, most of them multi-nationality, had signs imploring visitors to always sit. Took me a while, and quite a bit of 'public shaming' to remember to sit. The weirdest part was that whenever I'd have non-German male visitors, we'd usually end up in an argument about the practice because it was perceived to be emasculating! And more than once my guests, otherwise perfectly polite, would just pee standing up anyways.