Kieran Culkin has confessed. The star of “A Real Pain” and “Succession” admitted that he once swapped a prop joint for one ...

“Uh-oh. I believe it’s happened,” he recalled thinking. Culkin told the outlet he ran to the wings and “just watched” as ...

Kieran Culkin opened up about getting Mark Ruffalo, 57, high while they were in a play together by swapping a prop joint for ...

Ruffalo told Graham Norton in 2012 that "a very naughty young actor" replaced his fake joint with a real one during a stage ...

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

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.

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

Where there's smoke...there just might be an angry stage manager.

Kieran Culkin, known for his role in 'Succession,' once swapped a prop joint with real marijuana as a prank on Mark Ruffalo ...

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

The subject of the day is marijuana, so let’s indulge in a little nostalgia. Do you remember the first time you smoked a ...