Dan Mullen rocks a phenomenal 'Christmas Vacation' sweater Posted Dec 24, 2014 There's nothing quite as satisfying in storytelling as good, old-fashioned continuity. You'll recall that back in August, Mississippi St. Bulldogs head coach Dan Mullen was one of the coaches involved in the "coaches reading mean tweets" segment on ESPN. Mullen was reading off a tweet comparing him to Cousin Eddie from Christmas Vacation, leading to this transcendent moment in history. (SB Nation)