Kieran Culkin Reveals He Was ‘Naughty’ Teen Who Got Mark Ruffalo High on Stage

“I’m like, ‘I thought this was a good prank. I’m stupid. Oh my God, I’m so sorry,’” he recalled. “But actually, they loved it. Mark says, ‘I haven’t smoked pot in 10 years; the second half’s going to be so much fun.’ There was this other actor who had never smoked pot in her life. She goes, ‘Is this what being high is? This is lovely.’ And then Phyllis Newman comes in and goes, ‘I haven’t smoked pot since the 1960s. Thank you, darling.’”

While Culkin’s costars didn’t see the harm in the stunt, the play’s stage manager did not share a similar sentiment.

“Then the stage manager comes stomping in and goes, ‘I don’t care whose it is, or what happened, but Kieran, give me the joint,’” he reflected. “I sheepishly handed her the roach and she said, ‘Ruin your life on your own time.’”

Following the incident, Culkin learned his lesson and never pulled a stunt like that again.

“I know, I know. But I was young,” he told the outlet. “I’m 42 now. I know better. I’m not going to try to get anyone high on stage.”