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Watch out Vanessa! You've got some hot competition.

So a Page Six spy that attends the GQ Men of the Year Awards (this time the party was held at the Chateau Marmont) heard a drunk confession from none other than Transformers beauty Megan Fox...

The stunner admitted to crushing on teen heartthrob Zac Efron. "I'm obsessed with him," Fox gushed. "What you don't know is that Zac and I are the same person... it's like Janet and Michael [Jackson], we are the same person."

Uh, I don't even wanna KNOW what that's supposed to mean!