what do i wanna be when im a teenager

Sorry, but I don't understand the question...
First off, what can 당신 "be" when you're a teenager?
Secondly, how would I know what 당신 want to "be?"

Current occupation, my friend. And it isn't all it's cracked up to be.

a moody teenager

have a great fun teenagesh life ever i dont have to worry about nothing