The flick features Fox, Amanda Seyfried, Adam Brody and others in the slickly written, tongue-in-cheek sophomore effort from Cody. It follows a possessed cheerleader who begins using her sensuality to lure –- and kill — her male classmates.

“I’m a man-eater. I eat boys,” the “Transformers: Revenge of the Fallen” star said, grinning. “I’m sort of a zombie, but not really. I get improperly sacrificed [and it possesses me]… my character is a frighteningly vapid high school girl who’s captain of her flag team.”

“She gets improperly sacrificed by Adam Brody’s band, who have sold their souls to Satan in order to get a record deal,” Fox laughed. “And what happens when you improperly sacrifice someone is the victim gets taken over by a demon. They thought I was a virgin — and I was not a virgin.”

“So, I get taken over by a demon,” Fox continued. “And in order to maintain the state of the undead, I have to feast on human flesh. And so, I start eating boys.”

As anyone who’s seen “Juno” will remember, Cody’s style is as highly stylized as it is intricately hip. And so, Fox said that all the actors on set were careful to keep their improv tendencies to a bare minimum.

“That was actually something that was hard about making that movie,” Fox revealed. “Because it was Diablo — and because she just won an Oscar — we were not allowed to deviate from the script. Not even a single word.”

In this day and age of Judd Apatow, Christopher Guest and other ad-lib-loving filmmakers, such script fidelity has become rare. “It was really hard coming off of ‘Transformers,’ because everything is improvised — we don’t stick to the script almost at all,” Fox said of Michael Bay’s giant robot films. “So that was difficult. [Cody] definitely has a very specific way of speaking and of writing. But I feel like I tackled it okay.”

Which are you most excited to see: Another film from Diablo Cody, Megan Fox as a cheerleader, or a demon/zombie tongue-in-cheek teenager flick?

Adam Brody and Amanda Seyfried in their wardrobe

Sources MTV Movies Blog , adam brody online , Amanda Seyfried Fan