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.

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.

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

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.

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."

We all have seen Geroge Clooney playing a coy on screen in many movies, but the actor is famous for his prankster personality in real life. Recently, while making an appearance on Jimmy Kimmel Live!,

When you're a Hollywood actor, many things are forgiven. The "Mission Impossible" star probably doesn't hold it against him for making fun of him. But did Meryl Streep also forgive Clooney for the joke?