When the English director Kirk Jones met John Davidson to explain that he wanted to direct a film about his life, the first thing Davidson said was: “Fuck!”. But it wasn't a spontaneous invitation to fuck but one of the verbal tics that have marked his life since he was 14, when he developed Tourette's syndrome. In a matter of weeks, Davidson went from being a normal teenager with good grades and a group of friends to being marginalized at school, labeled as crazy, beaten by classmates, and on occasion, arrested by the police. His struggle to have a dignified life, relate to others, and find a job are the raw material for Incontrolable (I swear), the film inspired by Davidson, which premieres this Friday and is already one of the great successes of British cinema in the last decade, with more than a million viewers in cinemas in the United Kingdom and awards such as the Bafta for best actor for Robert Aramayo, who beat, among others, Leonardo DiCaprio and Timothée Chalamet.