Mr know it all
Well ya think you know it all
But ya don't know a thing at all
Ain't it something y'all
When somebody tells you something bout you
Think that they know you more than you do
So you take it down another pill to swallow

Mr bring me down
Well ya like to bring me down don't ya
But I ain't laying down, baby
I ain't going down
Can't nobody tell me how it's gonna be
Nobody gonna make a fool out of me
Baby you should know that I lead not follow

[Chorus]
Oh you think that you know me, know me
That's why I'm leaving you lonely, lonely
Cause baby you don't know a thing about me
You don't know a thing about me

You ain't got the right to tell me
When and where to go, no right to tell me
Acting like you own me lately
Yeah baby you don't know a thing about me
You don't know a thing about me

Mr play your games
Only got yourself to blame
When you want me back again
But I ain't falling back again
Cause I'm living my truth without your lies
Let's be clear baby this is goodbye
I ain't coming back tomorrow

[ *from http://www.index-of-mp3.com/lyric/kelly-clarkson/mr-know-it-all.html ]
[Chorus]
Oh you think that you know me, know me
That's why I'm leaving you lonely, lonely
Cause baby you don't know a thing about me
You don't know a thing about me

You ain't got the right to tell me
When and where to go, no right to tell me
Acting like you own me lately
Yeah baby you don't know a thing about me
You don't know a thing about me

[Bridge]
So what, you've got the world at your feet
And you know everything about everything
But you don't
You still think I'm coming back but baby you'll see

[Chorus]
Oh you think that you know me, know me
That's why I'm leaving you lonely, lonely
Cause baby you don't know a thing about me
You don't know a thing about me

You ain't got the right to tell me
When and where to go, no right to tell me
Acting like you own me lately
Yeah baby you don't know a thing about me
You don't know a thing about me

Mr know it all
Well ya think you know it all
But ya don't know a thing at all
Yeah baby you don't know a thing about me
You don't know a thing about me