This explains a lot:
Give pee a chance: Why German men urinate sitting down
Does language shape culture? Yes, says the Sapir-Whorf hypothesis. This map may be used as additional evidence. Take the German language: rich in single words that express things other languages need half a sentence to describe. One such word is Sitzpinkler, a man who pees sitting down. Not only do the Germans have a word for it, they are remarkably more proficient at it than most other nationalities.
Recently, UK-based pollster YouGov published the results of a 13-country survey of men’s urinating preferences. This map shows the eight countries surveyed in Europe — the others were Canada, the U.S., Mexico, Singapore, and Australia. Of all 13 countries, Germany was the one where most men sat down “every time” to urinate (40%). Add those who do so “most times” (22%), and you get the result shown on the map: nearly two-thirds are Sitzpinkler (without final “s”: the word is both singular and plural).
Sitzpinkler statistics
That puts German men well ahead of their second-placed counterparts in Sweden, where only 22% of men sit down “every time.” More Swedish men sit down “most times” (28%). Danish men place third overall (44%), ahead of Australians (39%) and Canadians (35%). The streams of French (35%) and Italian (34%) men almost cross, but despite the overall closeness of the result, a considerably larger share of French men are Sitzpinkler of the “every time” variety (19% vs. 13% in Italy). Dangling at the bottom of the European league are Poland (27%) and the UK (24%), with only 10% of Polish men and 9% of British blokes sitting down “every time.”
More at: https://bigthink.com/strange-maps/sitzpinkler-german-men-pee-sitting-down/