The golden boy of football Lionel Messi last night decided to show another side to his personality as he launched an astonishing attack on Mapou Yanga-Mbiwa. The Roma defender lost his temper with Messi during their 3-0 defeat at the Nou Camp but rather than walk away, the usually mild-mannered Messi grabbed the Frenchman and aimed a headbutt at his opponent. Unbelievably the referee only issued a yellow card to each player.