Michael Che couldn't believe how close his co-host came to losing his "beautiful, award-winning, world-famous" feature on live TV. “ Weekend Update ” brought back its joke swap tradition on Saturday and, while Colin Jost ’s wife Scarlett Johansson wasn’t a punchline this time around , the host nearly got his hair shaved off on live TV. The wild moment was teed up by Jost, who was reading jokes penned by his co-host Michael Che , advising viewers to try and “separate the art from the artist” as