Cameron Diaz: I’m pretty comfortable being naked

CAMERON Diaz and Rob Lowe in “Sex Tape”

LOS ANGELES – We never thought the day would come when our interview with a Hollywood A-list star would involve…butt cracks. Cameron Diaz, ever-fun and candid, brought up the subject herself.

“I am naked a lot,” said Cameron, casually dressed in a Stella McCartney top, Rag & Bone jacket and Frame jeans. The actress was promoting her comedy with Jason Segel, “Sex Tape,” where she’s seen without clothes on.

Cameron Diaz. RUBEN V. NEPALES

Really small

“I am pretty comfortable with being naked,” Cameron said. “I figure that people have already seen my butt. I wear really small bikinis. The only exclusion I have left out for many years when I wore a bikini was my butt crack. Now, you all know what my butt crack looks like. I am sure it’s not like a long one. It’s kind of short, proportionate to my butt in volume. It’s not weird.”

She asked aloud, “You know how some people have a really long butt crack?” Cameron was smiling throughout this discourse; she might as well be discussing skin-care secrets. She’s always been open and relaxed in our chats. “You’re like, ‘Wow, that crack is much longer than I expected!’ Mine isn’t; it’s OK.”

Filtered water

She took a swig from a bottle that she brought with her to this meeting room at the Four Seasons in LA. It wasn’t alcohol, she said. “It’s filtered water from my house. I don’t like drinking out of plastic.”

Directed by Jake Kasdan, “Sex Tape” is about a married couple, Annie and Jay, played by Cameron and Segel, who decide one night to make, well, a sex video on Jay’s iPad, to spice up their marriage. The video is accidentally leaked to family, friends and coworkers, a potential source of embarrassment to the couple. They scramble to get back the devices synced to Jay’s iPad before anyone could watch the vid.

Not surprisingly, Cameron declared, her blue eyes twinkling, “It’s really hard to embarrass [me]. I wish it was easier. I would probably not do half the s–t I do if I was embarrassed more easily.”

Funny, absurd

Cameron said the most challenging part of being in “Sex Tape,” which also stars Rob Lowe, was not the nudity but getting through some of the scenes: “Just how funny things were; how absurd we were taking things and how silly things got. There was Jake, our director, standing over us with a camera, telling us what to do.” The pair’s characters had to come up with various sexual positions, with the help of that 1970s illustrated sex manual, “The Joy of Sex.”

Cameron quipped, laughing, “What I love so much about my job is that we get to do these really absurd things that you can’t believe that you get paid for. It’s just playing, the entire time.”

In Jason, Cameron has a perfect actor to “play” with. “Jason and I have the same sensibility about it,” she pointed out. “He is completely fearless.” Laughing again, added the San Diego native, “There’s nothing he won’t do, including a naked headstand. We tried to bring that to all the silly things that we did, like what props we could use. Jason sings a song in an Egyptian loincloth, while I am wearing a Viking hat. It’s not really that sexual as much as it’s just people having fun together.”

THE ACTRESS, here in a scene from “Sex Tape,” keeps all the negative stuff in the Net out of her real life.

Cameron admitted that it was her naked double who attempted, and missed several times, to land on Jason’s private parts, until she made it. “I can’t do a flip,” Cameron stressed, smiling. “I wouldn’t do that to Jason—the terror that he felt about what could possibly happen if I made any attempt. I leave that to the professionals. That girl’s an acrobat; that’s what she’s done her whole life.”

No, she wasn’t

Sorry guys, that was not Cameron humping a Ferrari in a recent film, either. “That wasn’t me on the windshield in ‘The Counselor,’” she admitted. It was also her double.

As for being fit, Cameron said: “I am almost 42. If I haven’t built a relationship with my body by now, if I didn’t become friends with it and learn to love it, I would probably be in a really bad place. I was a skinny kid. People made fun of me. We all grow out of that, luckily.

“It’s not like I walk down the street and somebody calls me Skinny Bones Jones like they used to when I was a kid. People talk s–t on the Internet. I can keep that stuff out because it doesn’t mean anything; it doesn’t have anything to do with me. It has to do with people who are negative. That’s just how life is— you just grow up.”

(E-mail the columnist at [email protected]. Follow him at https://twitter.com/nepalesruben.)