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

The "very naughty young actor" responsible for getting Mark Ruffalo and others high on stage during an off-Broadway play has ...

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

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

Mark Ruffalo revealed how he handled being pranked by Kieran Culkin - who swapped a prop joint for a real one - on the ...

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

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

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 ...

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 has admitted that he once swapped a prop joint for a real one while acting in a play alongside Mark Ruffalo ...

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

Kieran Culkin reminisces about a mischievous prank that got Mark Ruffalo and co-stars hilariously high during a live theater performance.