This article identifies teenagers’ discourses on their sociolinguistic experience, the development of their capabilities as plurilingual speakers and the identities (individual, collective, linguistic, and cultural) they develop within a specific context. Through a series of individual sociobiographic interviews, the representations of languages and the strategies they use in language contact situations to construct and develop plurilingual identities emerge with regards to constraints related to language acquisition and transmission, as well as to the stated verbal repertoires and the many identities they claim in order to ponder on the best method to describe complex language situations.