Vanessa Hudgens is one lucky so and so, because after seeing Zac Efron topless, we wish we were her.
The actor, whose perfect pecks and muscles are making it difficult for us to think, were on show whilst Zac explained how scenes from his new movie, Charlie St Cloud, were shot in a vast water tank, in a clip posted onYouTube.
It's Zac's fault that our brain has turned to mush....

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Zac in Charlie St Cloud....















