Hard to believe, but it's been almost twenty years since Matt LeBlanc first discussed the intricate art of 'smelling the fart acting' on Friends. The actor was joined on the red couch by Seth Rogen and Zac Efron, both of whom were there to talk about their upcoming film Bad Neighbours. LeBlanc seemed a bit embarrassed by the question, but took it in good fun. For a minute there, we really thought he was smelling something.