tē aro ...
1. it's incomprehensible, hasn't got a clue - used to indicate that the speaker, or someone else, has no idea about something, or something he/she has heard, seen or is expected to do.
Tē aro i a au tana īmēra. / I have no idea what her email is about.
Tē aro, tē aro i ēnā nā, e aha ana te aha. / That lot hasn’t got a clue about what’s going on.
Tē aro i a ia tētāhi kupu kotahi nei, engari ka upoko mārō tonu mai. / He can’t understand a single word, but he persists.