George to Brad: I Have An Oscar ... And You Don't!

George to Brad: I Have An Oscar ... And You Don't!
George Clooney and Brad Pitt
Jean Catuffe/INF; Jason Kempin/FilmMagic

04/09/2008 AT 06:45 AM EDT

George Clooney kept his feet on the ground when he was named PEOPLE's Sexiest Man Alive – twice! But his 2005 Oscar triumph for Syriana went straight to his head.

"It makes me much harder to live with," the Best Supporting Actor winner told Britain's morning chat-fest, GMTV, on Wednesday.

In fact, the 46-year old admits he often lords his big win over Oscar-less pal Brad Pitt.

"That's what I enjoy doing with Brad – is gloating," Clooney joked.

(Angelina Jolie's other half was nominated for Best Supporting Actor for 1995's Twelve Monkeys, but he lost out to Kevin Spacey in The Usual Suspects.)

To this day, the Oscar statue takes center stage during get-togethers chez Clooney.

"I keep it back over a fireplace in my house," he said. "When my friends come over, I make them pick it up and we take photographs of them giving an acceptance speech."

The actor is in London to promote his latest film, Leatherheads, costarring Renée Zellweger.

He has been spotted dining with Matt Damon – the reigning Sexiest Man Alive – and partying at London's Bungalow 8. So where is girlfriend Sarah Larson?

"She's in Los Angeles and working," he told PEOPLE at the film's London premiere Tuesday night.

• Reporting by DIMI GAIDATZI

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