Kieran Culkin, Mark Ruffalo TheStewartofNY/FilmMagic ; Amy Sussman/WireImage 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 prank in an interview with The Guardian published on Saturday, December 28….
