How do you clear a hotel room of Frenchmen? Toss in a bar of soap.
That's almost as funny as the remark about the Concorde crash which got the signature airplane grounded for good. It was full of German tourists. The very un-PC remark: The French manged to kill more Germans in that single flight than they did in the entire 1940 invasion of France.
In the early 80s I had a room mate. His girl friend had just graduated from college and came to stay with us for a week before she left to spend several months in Paris. She took two showers a day: once in the morning and once after her afternoon workout. Nothing unusual, nothing noticed. About a month after she left for France, she told my room mate that her landlord threatened to raise her rent, because “she took two showers a day, rather than once a week ‘like civilized people’.”