I'm an adult in a state, in a state (5,4)
I believe the answer is:
tamil nadu
'a state' is the definition.
(Indian state)
'i'm an adult in a state' is the wordplay.
'in a state' is an anagram indicator (the letters in confusion or chaos).
'im'+'an'+'adult'='imanadult'
'imanadult' is an anagram of 'TAMIL NADU'.
'in' is the link.
(Other definitions for tamil nadu that I've seen before include "state bordering Kerala" , "Southern state of India" , "Southern Indian state" .)