George Carlin said this quote
“ But when you're in front of an audience and you make them laugh at a new idea, you're guiding the whole being for the moment. No one is ever more him/herself than when they really laugh. Their defenses are down. It's very Zen-like, that moment. They are completely open, completely themselves when that message hits the brain and the laugh begins. That's when new ideas can be implanted. If a new idea slips in at that moment, it has a chance to grow. ”