Succession’ star revealed that he switched prop joints for the real thing while starring in an off-Broadway production when ...

Kieran Culkin admitted that he once tricked Mark Ruffalo and other co-stars into getting stoned during a live theatrical performance.

Kieran Culkin is coming clean about the prank he played on Mark Ruffalo 25 years ago. The A Real Pain actor, 42, revealed in ...

Kieran Culkin recalled the swapped-joint incident, which went down when he and Mark Ruffalo starred in the stage play 'The Moment When' together when the now 42-year-old Culkin was just a teen.

Succession star Kieran Culkin recently opened up about getting actor Mark Ruffalo ‘high’ long ago as part of a prank, when ...

With a stash of prop joints backstage, Culkin couldn’t resist the temptation to swap one out. “Uh-oh. I believe it’s happened ...

Kieran Culkin has revealed himself as the "naughty young actor" who was responsible for getting Mark Ruffalo and other ...

Kieran Culkin has come forward as the culprit who got Mark Ruffalo high during a performance of The Moment When more than two ...

After Mark Ruffalo said a "naughty young actor" once got him high on stage when switching a prop joint for the real thing, ...

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Kieran Culkin recalled how he swapped a prop joint with real marijuana while pulling his prank on Mark Ruffalo ...