yes, I'm dead inside
I am not up to this section yet, but using mati for people is considered rude.
"Sudah" = "yet" -> "Are you dead yet?"
"Did you already die"? Can this be correct?
Did you already die? should also be accepted.
I cannot imagine ever asking someone this question. Perhaps some of the other Indonesian language students could enlighten me!
It's probably something you'll hear in a movie or tv show with supernatural things.