The use of “hard” drugs (heroin, cocaine, crack) in a precarious environment and prison experience often work continuously or alternately in the operation of biographic trajectories. The aim of my research is to understand the articulation of these two experiences and their impact on the relationship to the body and health. Confronted with their own uncertainties and an institutional discourse that declares their criminal and health responsibility at the same time. users of ‘multiple repeat offenders’ use the game of veilage and unveiling, unblemished, lies, deformation of events and imaginary distortions, in order to escape the social marking which enforces them in accepting a system of guilt for their offending practices and the management of their own health. Emotion can then open up a space for reconstruction, deformation and transformation of experience by participating in a real survival tactic. Depending on the context, it is a question of ‘untying’ and ‘untying’ peers in order to maintain social ties, to break the indifference in public space or to achieve some improvements to their living conditions. By analysing their interactions with caregivers, prison staff, sociologists or mere pastoralists, various types of interactive postures (whistleblowers, documenting, complaining or appealing) are emerging which show how these drug users also conduct informal interviews or exchanges by instrumenting their emotions. Thus, they ask others for an emotional reaction which enables them to escape from the framework imposed on them and to acquire new share margins.