Charlize Theron and Michael Fassbender talk sex and death in W magazine

charlize-theron-michael-fassbender-sexy-pics-W.jpg "Prometheus" costars and friends Charlize Theron and Michael Fassbender strike some sexy poses together for the August issue of W magazine, but do they find it more difficult as actors to shoot sex scenes or death scenes?

"It depends on who you're doing the sex scene with," Theron says. "I don't have issues being naked [pauses]. That sounds very slutty."

"Kind of. I didn't want to say anything, but yes," Fassbender responds.

In "Prometheus," the pair play siblings of the future: He's a robot named David, who's favored by the father of Theron's character, ­Meredith Vickers.

"I've been lucky to work with people I've been really comfortable with," Theron says. "And Michael's one of the two who did not make me feel very comfortable [laughter]."

"I was a robot!" he shoots back.

Check out more pics from their W shoot below.

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Photo/Video credit: W magazine