Who are you? (muncausen by proxy cover)

I should have been the one to break up with you
You said, Who are you? Who are you?
I wanna snap your neck and spit on you.
You said, Who are you? Who are you?
If I got a call and said you were dead
You said, Who are you? Who are you?
I'd [bad word] my shoulders and I say what-ev
You said, Who are you? Who are you?