In a new interview with The Guardian, Kieran Culkin makes a point of saying that he doesn’t do drugs and never has—with one ...

Culkin and Ruffalo shared the stage in Playwright Horizons' 2000 production of James Lapine's "The Moment When." ...

Kieran Culkin has revealed himself as the “naughty young actor” who was responsible for getting Mark Ruffalo and other co-stars high during a Broadway production of The Moment When. Ruffalo ...

Kieran Culkin has confessed. The star of "A Real Pain" and "Succession" admitted that he once swapped a prop joint for one spiked with real marijuana when he was cast in a stage production ...

"Mark says, 'I haven’t smoked pot in 10 years; the second half’s going to be so much fun,' " the 'A Real Pain' actor claims Paras Griffin/Getty; Monica Schipper/Getty All the world’s a stage!

Kieran Culkin has come forward as the culprit who got Mark Ruffalo high during a performance of The Moment When more than two decades ago. “I was 17 and stupid,” Culkin, 42, admitted to the ...

Kieran Culkin confesses to getting Mark Ruffalo and their co-stars high on stage during a 2000 production of James Lapine's 'The Moment When'. Joe Maher/Getty Images for BFI/Monica Schipper/Getty ...

The 42-year-old actor was just 17 when he starred in a 2000 production of James Lapine's The Moment When. One scene called for Ruffalo to roll and smoke a fake joint, with Culkin revealing there ...

Kieran Culkin has confessed. The star of “A Real Pain” and “Succession” admitted that he once swapped a prop joint for one spiked with real marijuana when he was cast in a stage production ...

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"I was 17 and stupid," Culkin prefaced of his time in Playwright Horizons' production of James Lapine's play The Moment When at the time. "I'm like, 'I thought this was a good prank. I'm stupid.