Better watch your back.
This is a warning.
Oh, I rarely behave.
Got it all, I trip over it.
Oh darling, you should watch what you say.
(You should watch what you say)

Ooh-ooh, hey-hey, I'm looking good, aren't I?
Ooh-ooh, what you say?
Ooh-ooh, hey-hey, I'm looking good, aren't I?
Ooh-ooh, be afraid.

I'm your girlfriend's nightmare.
Your boyfriend's dream.
Be your best friend.
Turn around and I'm your enemy.
I'm your girlfriend's nightmare.
Your boyfriend's dream.
I said don't mess with me.
I said don't mess with me.

I know they're talking shit.
But I don't care, I've heard it all.
They say that I'm an ass.
And I just (Oh), it's not my fault.
I don't go running to 'em.
They come to me instead.
Sometimes I even boot 'em.
Because they can't give a -

Ooh-ooh, hey-hey, I'm looking good, aren't I?
Ooh-ooh, what you say?
Ooh-ooh, hey-hey, I'm looking good, aren't I?
Ooh-ooh, be afraid.

I'm your girlfriend's nightmare.
Your boyfriend's dream.
Be your best friend.
Turn around and I'm your enemy.
I'm your girlfriend's nightmare.
Your boyfriend's dream.
I said don't mess with me.
I said don't mess with me.

I'm your girlfriend's nightmare.
Your boyfriend's dream.
Be your best friend.
Turn around and I'm your enemy.
I'm your girlfriend's nightmare.
Your boyfriend's dream.
I said don't mess with me.
I said don't mess with me.

B-i-t-c-h, you better write it down.
B-i-t-c-h, 'cause I told you now.
B-i-t-c-h, you better write it down.
B-i-t-c-h, because I told you now.

Ooh-ooh, hey-hey, I'm looking good, aren't I?
Ooh-ooh, what you say?

I'm your girlfriend's nightmare.
Your boyfriend's dream.
Be your best friend.
Turn around and I'm your enemy.
I'm your girlfriend's nightmare.
Your boyfriend's dream.
I said don't mess with me.
I said don't mess with me.

I'm your girlfriend's nightmare.
Your boyfriend's dream.
Be your best friend.
Turn around and I'm your enemy.
I'm your girlfriend's nightmare.
Your boyfriend's dream.
I said don't mess with me.
I said don't mess with me.

I'm your girlfriend's nightmare.
Be your best friend.
Turn around and I'm your enemy.
Girlfriend's nightmare.