Mark Wahlberg [1] and Will Ferrell [2] stopped by The Graham Norton Show on Thursday and shared hilarious stories about their sometimes questionable behavior at their children's sports games. Mark, a father of four, opened up about the time he was photographed looking super intense while screaming at his son Michael's championship game. "I lost my voice for about a week, screaming, yelling," he said. Will also revealed one particularly "crazy" moment when he was trying to get his son Magnus's attention. Watch the funny video above, then check out a shirtless Mark hitting the beach [3] in Hawaii this week.