The increase of sexual aggressions committed by adolescents, and more specifically when they are gathered together, demands a clinical, psychopathological, metapsychological and anthropological research hereby introduced. The present feeling of uneasiness within the social link, the change in values and, above all, the  » new  » sexuality as promoted in our societies entail new perverse behaviours, with ordinary adolescents according to a psychopathology that only evidences a difficulty in associating the ådipian forbiddings and the demands of the collective superego.