Rvle

that's not just any nose. that's the nose. they stole Wikipedia's nose.

Oh nose!

ok i don't get this one

The alt text has an explanation. Couldnt figure out how to copy it to this comment.

That's an insult in my language

It means "you can't do it" but it has the same effect as "fuck you". It's kind of the middle finger in Turkish. Nah is the word equivalent but nah has a lot less effect than the gesture itself

There are variations of this. One where you move your thumb between your fingers. There is also one where you pull your hand back, do a "shloop" noise with your arm, and then wiggle it. If they licked their arm before doing it, that's gross but it's also the strongest variation

I've also seen ones where they put three of their fingers in between the other hand's fingers. But that's mainly comedic

In most other languages it means good luck and stuff.

Not only an insult, its also used in lots of unserious ways. Quite versatile.
Get into an argument and the other party turns out right? You can have "nah" pulled at you (jokingly).
You can also have it done at you at times you dont expect, and it being unexpeced makes it funny.