George Clooney Has 'Less Time' For Fun Pranks On His Co-Stars Now

George Clooney is master in the art form that is pulling pranks on his co-stars – but it turns out he may be retiring his joking antics now that he’s a father-to-be.

While promoting their film Suburbicon at CinemaCon last month, the 55-year-old actor’s longtime pal and co-star Matt Damon revealed that George behaved while they were making the upcoming flick.

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“I don’t think he did anything to me this time, which makes me nervous because that means that something might happen,” Matt, 42, told E! News. “But I think because, you know, he had such huge changes in his own life, he has less time now.”

“He can still definitely be fun, but he just has less time, you know what I mean?,” Matt added. “When he was single and we were doing Ocean’s Eleven that dude had nothing to do, but plot ways to pull pranks on people. But now he’s got a full time job and a full time family. I mean, that’s a lot.”

Pictured: George attending a special screening of The Promise with leading stars James Cromwell, Shohreh Aghdashloo, director Terry George, producer Eric Esrailian and singer-songwriter Chris Cornell at the Soho Hotel on Wednesday (April 5) in London, England.