Parents who try to befriend their children online are likely to suffer a humiliating knock-back, Gabriel Byrne suggested yesterday at the Cannes Film Festival. Byrne said that fathers and mothers were likely to have a similar experience to his character in Louder than Bombs, a drama about a grieving widower and his two sons that is competing for the festival's Palme d'Or prize. In the film, his character joins an online role-playing game in an attempt to interact with his son, who has stopped talking to his father in the real world. 'Trying to be a teenager when you're not a teenager is seen as a kind of condescension,' the Irish actor, who has two grown-up children, said. 'Teenagers resist that.' He added that the job of a teenager is 'to remove himself from the influence of the father'.