Shut The Door

You say you know what's good for me
But you are the worst thing I think I've ever seen.
And if you really want to do a favor for me
Get out of here right now, do you hear me?

I don't want you anymore
And when you leave please shut the door.

If you really want to do a favor for me
Shut the door when you leave
Because I wouldn't want you walking in
And see me messing around with my new girlfriend