Megan Fox may spend "Transformers: Revenge of the Fallen" running from giant robots, but in her next film, she's the one chasing people down.
In the Diablo Cody-penned "Jennifer's Body," due in September, the sexy star plays a literal man-eater – and she told Access Hollywood's Shaun Robinson on Friday that things get gruesome.
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"I start eating the boys in my high school," Megan said.
Megan's character joins the undead after a rock band (led by "The OC" star Adam Brody) attempts to sacrifice a virgin – and picks her by mistake.
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"Well, in reality, I'm not [a virgin]," Megan said of the role. "So it goes wrong and I get taken over by a demon. I have to stay in this state of [the] undead and to do that, I have to start eating people."
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Calling it "one of the best scripts I've ever read," the star said filming "Jennifer's Body" was a different experience than "Transformers," which kept the self-described "not very athletic" star on the run.
"The running was really difficult for me," Megan said. "We had to run up these giant sand dunes. I was in motorcycle boots and [co-star] Shia [LaBeouf]'s in a pair of Nike Cortezes so he can really run fast. I'm trying to keep up with him and we did it like six times."
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But the shoot wasn't easy on Shia either – and after he had an on-set eye injury, it brought out some motherly instincts in the 23-year-old star.
"I just wanted to pet it and put ice on it and help him, he's just a little boy," she said.
While she may not be a runner, the fit actress told Shaun she does better in the pool.
"My goal was to go to the Olympics for swimming," she told Shaun. "I was a swimmer, but that's different than running. I've never been a dry land athlete."
"Transformers: Revenge of the Fallen" is due on June 24.
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