Just one expression, just one line

Baby I swear I'm done in a minute
Me and the rats picking over the rot
Maybe I stand for nothing
It's all I ever got

Now you're not what you were
Now you're not what you were
Baby I swear I'm done in a minute
Baby I'm so bored I could die
Me and these four walls do not agree
I'm so kicked down I want to cry

Now you're not what you were
Now you're not what you were
Sometimes I feel like I'm an actor
With just one expression
And just
Just one
Just one line