Kieran Culkin once got Mark Ruffalo high while on the job after switching out a prop joint with the real thing. In a profile with The Guardian published Saturday, Culkin recalled the prank his 17-year-old self concocted while starring alongside Ruffalo in an off-Broadway play in 2000, and explained that he “just watched” as Ruffalo took a draw of the “fake” joint before passing it to his co-stars on stage. “I’m like, ‘I thought this was a good prank. I’m stupid. Oh my God, I’m so sorry.’ But actually, they loved it,” Culkin remembered. “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.’” The Succession star proceeded to express that he was “17 and stupid” and added, “I’m 42 now. I know better. I’m not going to try to get anyone high on stage.”
