What does this mean?

[Aysok]

How would I say that in Na'vi?
Peu aysi fí'u ____?
I think Im wrong

[Hawnuyu atxen]

Kaltxì!

I'd say: Peu fì'uä ral lu?
what-thing this-thing-gen meaning is?

[Payä Tìrol]

I think there's an idiomatic expression for this...

Fì'u nì'ìnglìsì slu 'upe?
This in English becomes what?

[Hawnuyu atxen]

Yeah, i thought i remembered something like that, but i couldn't find it...
To be honest we could use "Fyape fkol fì'ut pivlltxe nìÌnglìsì?" too... (it was my 2nd thought...).

But the idiom is the idiom, so it's the right thing

[Aysok]

Thanks guys