Real talk

Real answer: these are actually real languages! They're just conlangs, or constructed languages, instead of natural languages. The major problem with conlangs generally ends up being the limited vocabulary, but the grammar foundations are usually solid.

I actually really like Klingon as a language because it was intentionally designed to be alien, and specifically to be very Klingon. Most languages are Subject-Verb-Object (like English and other Western languages) or Subject-Object-Verb (like Japanese or Hindi). Klingon, however, is Object-Verb-Subject - it's very direct with the emphasis placed on the target of the sentence, which makes sense with the Star Trek world and Klingon culture.

Fun fact, Klingon has at least one native speaker - some guy raised his daughter to speak Klingon as well as English. (I'm not a fan of this - on one hand, learning multiple languages from an early age is a huge leg up in being able to learn more languages in the future, but on the other hand Klingon is entirely useless as a primary language given its structure and the few other people who speak it.)

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It's funnier with French because no one hates the Dutch language more than the Dutch, but France thinks everything it does is the best.

Right, what’s ‘Dutch’?

Houd je smoel anders zet ik je je kop tussen twee oren

we got high valyrian before Persian or Tagalog

I think it's properly called Hollandaise.

All languages are fake...

wait till this guy finds out people still learn Latin

nIDwI' leghmajvaD ngoQ'e' nIDwI'! (This aggression will not stand!)

Nou mag je eens heel goed luisteren, jij hondelul.

Spreek NEDERLANDS met me!

Holländisch ist nur Deutsch wenn man Halsschmerzen hat.

Geef me een klapp papa

Zeg klootviool

I'm in the process of learning German so my mental shorthand way of thinking about Dutch is that it's basically German with extra As and Os.

That is not a Dutch flag, that is the flag of Luxembourg...

Zeg makker …

Hmm... for once I thought I was learning Luxembourgish, but I accidentally learned Dutch instead.

Nah jk. I still don't know that much Dutch yet.

Oh shit... Can I learn Tolkien's elvish on DuoLingo? :O

I thought they got rid of Klingon? I was excited to try it out but it was gone :-(

Voel me een beetje beledigd maar eigenlijk ook niet

Ayy take that back, high valyrian ain't a fake language

Ĉi tiuj ĉiuj estas veraj lingvoj krom la nederlanda. Kio estas la nederlanda?

tugh pomlIj ngeH!

Hey Dutch is the only fake one in that list

Why no Sindarin?

Make Klingon the prime language of EU.

Hodsternokke

Geen schijt praten maat.

ZEG MAKKER!

Gozer

You never know when you'll have to deal with a Lochness Monster. Better be ready than sorry

Gozerwijffie, ouwe, broer wat is deze

That's exactly what a biHnuch would say