Britney Spears does it again with 'I Wanna Go,' which she recently announced as the third single release from her 'Femme Fatale' album.

Brit kicks off the tune by declaring that it's time for her to be a little inappropriate. And while it's not something she hasn't done before, we love the Britney who pushes the envelope. Oh, and this song has whistling!

In one sexy verse, the music icon persists that she's pretty sick of being told what to do, and if she wants to be 'no holds barred,' she will be:

"Lately people got me all tied up / There's a countdown waiting for me to erupt / Time to blow out / I've been told who I should do it with / You keep both my hands above the blanket / When the light's out"

'I Wanna Go' -- which follows the hit singles 'Hold it Against Me' and 'Till the World Ends' -- flirts with the X-rated side of Ms. Spears -- and to our delight, is yet another late-night club track to dance to. That comes as no surprise, really, as it was produced by Max Martin and written by Savan Kotecha.

We're pretty stoked on 'I Wanna Go,' and can't wait to go all the way live when B.S. hits the road with Nicki Minaj this summer.

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Listen to Britney Spears, 'I Wanna Go'

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