Don Cheadle says George Clooney is the "most childish" person in the worldThe actor poked fun at his 'Ocean's Thirteen' co-star at the American Cinematheque tribute dinner in Los Angeles last Friday (13.10.06) which was held in honour of Clooney's career.Don jested: "No actor on the face of the earth is more childish, more juvenile, more downright infantile. "That's possibly why George doesn't have any children - he doesn't need the competition."Meanwhile, another of Clooney's 'Ocean's Thirteen' co-stars, Ellen Barkin, has admitted to having sex with the heartthrob actor.The newly divorced actress declared: "I have f***ed George Clooney. I always heard that George has amazing chemistry with all of his co-stars."Now I see why. I'm probably the only one of many actresses to stand up here and admit yes, I have f***ed George Clooney. I'm very proud of it actually.

"If you don't have chemistry with George Clooney, you need to check your pulse."

However, a representative for Barkin has played down her sex claims, saying: "She was just goofing around. It was a roast. She was being funny."

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