What?
The French have formalized rude.
My first trip to Paris was in 2000. I was in a grocery store and a woman bumped into me with her cart. She excused herself in French and I said, “Oh no, excuse me.” Her expression turned to seething contempt and she chastised me for speaking English in France. I told her that if it weren’t for my English and that of my fellow Americans, she would be speaking to me in German.
She left her cart where it was.