BDSM is an acronym for Bondage, Discipline, Dominance, Submission and Sadomasochism. BDSM involves an intricate set of rules and rituals which create a safe and controlled environment where the exchange of power between the partners can occur. BDSM is usually practiced in the bedroom, but it can also occur in public. In addition to S & M, there are also D & S (Domination & Submission) related activities such as pegging, fisting and sounding.