In Cesar Department, the teenage pregnancy has become a social phenomenon which requires attention from the Government and the academic fieldsto tackle it. First, referring to the last aspect, the article becomes a reflexive contribution, proposing the emergence of teen parenthood that brings the need to address subjectivities and experiences of these young parents; as well as, the different roles, behaviors and, attitudes within the framework of the meaning and the consequences for recognition, acceptance and exercise of the subject, referring to paternity within their personal, family and, social contexts. Thus, it propose, a broad vision of teen pregnancy, which is not only reduced to a simply biological or physical conditions, but it is inserted into the dynamics of different aspects such as psychology, juridical, and cultural. From the last aspect, there is a proposal and analysis of the emergency and the importance of young parenthood, as meaningful event; on one hand, socially they register their masculinity, on the other hand, the assumption of his life project is given. So, the changes and the implications the teenager has to face when he realizes about the pregnancy; then, the birth, and, finally raising the son/daughter, to test the strength and the education as a man from the responsibilities, the entrance to the labor world and the necessary sacrifices that this generates.