Apologies but the lyrics here are slightly different than the popular version. This is the version we at Clockwork Blue sing when her obnoxious song won't get out of our heads!! Don't worry, you don't need to be caught singing Britney when you can sing this one to her face!
You can find the original version at Napster.com.

Oh Boobies Boobies
My chest was supposed to grow
My cleavage wasn't right, no
My knee to injure
And then nobody will know
But now my sweater's tight, yeah
Surgery, I want to be a D
Bigger mamories
I want them to show now
Oh! Because
My chest flatness was killing me
I must confess I paid for these
I look thirty-two but I'm still a child
I am a crime
Make my boobies one more size
My titties, titties
I got the boobies, it's true
And now you've all been blinded
My pretty boobies
You're s big and oh, so new
That's just the way I planned it
Golly Rolling Stone was naughty
See me baby, barely wearing clothes now
Oh! Because
My chest flatness was killing me
I must confess I paid for these
I look thirty-two but I'm still a child
I am a crime
Make my boobies one more size
I must confess
That my chest flatness
Was killing me - owww!
Don't ya know I paid for these?
I aim to please but
I play a crime
Make my boobies one more size!

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