Lyrics:

If you wanna go back to him, baby, get up and go.
I'm tired of being a clown caught up in your sideshow.
Night after night, it never ends:
It's like a heavyweight fight nobody wins,
And I'm throwin' in the towel:
Enough is enough.

Knock yourself out; break me in two.
You gotta go do what you gotta do.
I gave you my best shot but you didn't fall,
Head over heels in love after all.
An' I dont wanna hear no more:
Baby, there's the door.
There's nothin' left to fight about:
Knock yourself out.

Oh, let's not pull any punches,
While we're standin' here, toe to toe.
If you're gonna leave me here, baby, go on:
Go.

Knock yourself out; break me in two.
You gotta go do what you gotta do.
I gave you my best shot but you didn't fall,
Head over heels in love after all.
An' I dont wanna hear no more:
Baby, there's the door.
There's nothin' left to fight about:
Knock yourself out.

Oh, knock yourself out.

If you wanna go back to him, baby, get up and go.