The present study sought to investigate, trough a psychoanalytical perspective, some radical practices of body marking, such as tattoos, piercings, subcutaneous implants, pocketing, pulling and suspension. To do so, it begins by presenting the context in which such practices are approached, the contemporary consuming culture, in which the body occupies a place of prominence. Further on, is presented a historical background of practices of body markings and its uses. Falling upon the surface of the body, these practices provide it a new outline. The delimitation of corporal borders sends us to the subjective constitution theme, in which skin-to-skin experiences delineate the frontier between internal and external, the ego and the other. When relating with another, the body is still inserted in a pulsional register, becoming hence an erogenous body, marked by experiences of pleasure and displeasure. If pleasure can be found in displeasure and pain, the erogenous masochism, originally present in all forms of masochism, is then established. Finally, using the masochism as an instrument to deal with body markings that find in pain the indispensable condition to its realization, a presentation of the theme was made. Pain, besides being, in masochism, a way of obtaining pleasure, supplies the subject the perception of the outline of his body. That way, trough painful practices the subject finds himself in an effort to delimitate and keep tied his bodily borders.