(also known as Maladolescence ). It is an Italian-German erotic drama directed by Pier Giuseppe Murgia.
If you intended a different subject or a specific known film with a legitimate critical reputation (e.g., L'Adolescente by Jeanne Moreau, 1979), please clarify. Otherwise, the above essay addresses the problematic cultural artifact your string appears to reference. (also known as Maladolescence )