How well would you say that you speak English, French, German and Luxembourgish? Do you speak at a near-native level in all 4?

Pretty much, yes

I had a visit from an american guy (the cousin from an half-american friend of mine) trying to pinpoint my accent once. I almost had to show him my ID to prove I'm not american. A similar thing happened in Germany during my training (there's no brewery school in Luxembourg, so I had to spend 3 months a year in Dortmund for this) where they not only failed to pinpoint my accent, I screwed around a bit with some display of regional German accents (I know a fair bit of swabian, franconian and bavarian, also some Schwiizerdütsch, aka Swiss German). I was also a mod on 2 french websites, and on the latter i made several Wii Virtual Console game reviews, with the proof reader commenting that I was the one with the least amount of errors in my reviews. And of course, Luxembourgish is my mother tongue, so naturally I'm fluent in that one, too.

With most vendors, cashiers and so on being either french or french-speaking Belgians here in Luxembourg, it's nearly impossible to go around in the country without being fluent in the language, except on the German border, where German is more prevalent. And with our big banking sector, English is often used inside the banks. Of course, this results in always having some practice in each of the different languages on almost each day here.

I'm certainly well above what average native US speakers are capable of. Not that that's necessarily a very high bar.

In fact, I'm pretty sure that my English capabilities are already double of  whatever the requirements for a US Presidency are.

Hmm,     Dutch/French/German/English/Chinese...And I was fluently in Japanese (as in I could read manga for like 80% most words I did not get were Names/places/magics/specialty Names.    For me fluent means, I can take a book aimed for 12 year olds and understand almost everything.  The issue is I can buy a book for adults but then it depends on the theme. 

For example I was reading a Chinese book this morning and I came accross the word '紫藤.    I had no idea what it meant so I translated it to Dutch 'blauwe regen' (litterally Blue Rain)  I did not get it so I translated it to french and it became 'glycine', Then I translated it to English 'Wisteria' .....honestly still had no clue so did google image...

So yeah basically every language for me has a theme I know a lot of for example, sicknesses/medicines = Chinese.....Astrology = English   and so on.

But honestly I never considered myself a Polyglot especially when I am having issues with grammar. I always considered people speaking +10 languages polyglot, the kind of people who went to South Korea/China/Japan for 6 months come back and are fluently in it with almost no effort.

Typical German humility.

Yeah, especially considering that there was a whole regime that thought they were the master race and needed to exterminate races in other places so they could re-populate them.

Learning a new language is on my bucket list, I want to learn Japanese but I might just end up learning Spanish as it'll probably be far more useful than learning Japanese.

Well, usefulness has two factors I guess, usefulness employment wise, and usefulness in terms of your interests. I am very interested in Japanese media, which is why I'm learning it, as long as you have the motivation you should be able to pull it off.

After the War Germany really took a complete 180. Turns out killing a few million Jews makes you pretty humble on the world stage.

Except when it comes to Europe. Europe is our bitch.

No lo tengo muy claro, pero creo que hice una hace ya bastante tiempo, sería cuestión de recuperarla. Mañana te mando un privado y te digo .