Overview

• Kieran Culkin confessed to switching a fake joint with a real one during the 2000 off-Broadway production of 'The Moment When,' where he acted alongside Mark Ruffalo and others.
• The prank, which occurred when Culkin was 17, resulted in Ruffalo and other cast members unknowingly getting high onstage during a performance attended by critics.
• Ruffalo, who had not smoked marijuana in a decade, later described the experience as leading to one of his best-reviewed performances, though he would never repeat it.
• Other cast members, including Phyllis Newman, reacted with humor, while the stage manager reprimanded Culkin, telling him to 'ruin your life on your own time.'
• Now 42, Culkin reflected on the incident as a youthful mistake, emphasizing that he no longer engages in such behavior and has since matured.