You think you're such a cool kid

And everybody likes you

Know you think I'm stupid

Say you know more than I do

But what you'll never understand

Is I used to be such a fan

But now you're such a cool kid

It's like I don't even know you, yeah...

I'm getting really sick

Sick of how sorry sounds

Coming right out your mouth, oh...

Don't get too comfortable

'cause I might not be there

Next time you turn around.

So...

What would you do if I leave and don't come back?

I hope it breaks you in two

If I gave back all the pain that you put me through

What would you do?

I've always been a nice girl

And pretty understanding

But you mess up my head boy

And you're taking me for granted

And you're probably gonna throw a fit

When I call you out on all your shit

Yeah, I used to be a nice girl

I bet you wish it lasted

Oh...

I'm getting really sick

Sick of how sorry sounds

Coming right out your mouth, oh...

Don't get too comfortable

'cause I might not be there

Next time you turn around.

So...

What would you do if I leave and don't come back?

I hope it breaks you in two

If I gave back all the pain that you put me through

What would you do?

We'll make plans and I won't show up

I won't listen, I'll interrupt

When your birthday comes won't answer ya

'cause, so what, so what

I'll go out and kiss your friends

Like, oh my god, get over it

Yeah, go get drunk so you forget

I'm gone.

What would you do if I leave and don't come back?

I hope it breaks you in two

If I gave back all the pain that you put me through

What would you do?

Ooh-ooh-ooh, what would you do?

Ooh-ooh-ooh, what would you do?