Hello, I am looking for a German film production, comedy. The protagonists are two boys, one of them carried out and there he meets new friends, but it becomes a laughing stock, only one pretending to be friends. They replace tests in school and one of them get maximum points, then we admit. Mother of the other works in a shop with some electronics? and 'borrow' the camera from the store to the other and watch the way they discover that his father cheating on his mother with the teacher something thank you in advance for your answer.