Being a football manager is not an easy job. The gaffers put in hours and hours perfecting their tactics and then send their team through fire in training sessions to execute it and the referee just waves a small card to foil all the hard work. And every Premier League manager has a unique style of reacting to these decisions given against their players, which sometimes land them in trouble. We all know how Jurgen Klopp looks like an angry Chewbacca when he is raging against the fourth official or Roy Keane's death stare that can cause a mini-explosion. We all know about Jose Mourinho's raging war with the officials, but do we know what is going on in their minds?