The discussion surrounding SM and BDSM eroticism oscillates between pathologization and recognition. The incredible success of Fifty Shades of Grey supports the latter. The novel popularizes sadomasochistic sexual practices within a conventional romantic relationship. A defined framework, which must be negotiated discursively within the erotic relationship, is constitutive for SM and BDSM practices. This discursive element, in the sense of a consensual negotiation and contract model, receives special attention in this book. It features contributions from recognized social and cultural scientists, as well as representatives from the scene. Contributions include those from Robin Bauer, Ada Borkenhagen, Elmar Brähler, Norbert Elb, Lilian-Astrid Geese, Bernd Heimerl, Christoph Klotter, Sibylle Schulz, Angelika Tsaros, Elisabeth Wagner, and Volker Woltersdorff.