Strange thing, I just corrected an obvious mistake of yours. To the benefit of all. Just mentioned that you might have meant "Schirmmütze", as the word "Schurmutze" doesn't exist. That was it. But you couldn't stand it.
Same here as on Benno's or TMP. You are notorious for your brainless aggressiveness. Starting flame wars, that's your cup of tea. You certainly know a lot more about trolling than I do.
In the UK when we think of trolls, the three Billy Goats Gruff (De tre bukkene Bruse ), which is a Norwegian folk tale, comes to mind. Essentially, dim bridge troll outwitted by 3 smart male goats of ascending sizes.
To my mind when I see an umlaut I reckon the person is a German speaker, studied German at Uni or it is just a lucky stab on Google. The upshot is I don't fence with them as their level of certainty is greater than mine and finding it on the keyboard is a pain. Anybody who has had or has kids would know the Cat in the Hat and how the eponymous cat translates hat into many languages:
"cat, hat; in French, chat, chapeau
in Spanish, el gato in a sombrero
in German I'm a Katze in a Hut, and don't you know,
I'm a guanka in a bunkaquank in Eskimo"
I believe the Cat's hat is a Hut not a Mütze so where to draw the line seems clear.