The "Ocean’s 11" star appeared on "Jimmy Kimmel Live" to reveal that he pranks fellow actors posing as a costar or some other prominent person griping about a movie.

“Momentum is a big deal,” Clooney explained, “so I’m feeling hopeful.”

George Clooney has denied claims that he and Brad Pitt were paid $35 million each for their roles in the film 'Wolfs.'

The actors flaunted their long-time bromance while greeting each other in front of cameras at the TCL Chinese Theatre in Hollywood, Calif., on Wednesday.

Wolfs,' starring Brad Pitt, George Clooney, Amy Ryan and Austin Abrams, held its Los Angeles premiere on Wednesday, Sept. 18, at TCL Chinese Theatre. See all the red carpet photos here!

Jon Watts' light crime dramedy receives a limited release this weekend, before streaming on Apple TV+. Wolfs Review: George Clooney and Brad Pitt Are Pros In This Nimble Fixer Comedy Liz Shannon Mille

Brad Pitt and George Clooney have been roasting each other for decades now. In an Access Hollywood interview with Brad and George from 2001, the pair hilariously poke fun at one another while talking about working together on their hit flick "Ocean's Eleven."

George Clooney is a known practical joker. The actor is almost as famous for some of his antics as he is for his films. His friends like Brad Pitt and Matt Damon have spoken often about some of the pranks that Clooney has pulled, but the actor recently told a story about pranking Tom Cruise that has to be one of the best we’ve heard.

George Clooney and Brad Pitt are back together on screen in Wolfs, giving Clooney a chance to prank director Jon Watts.