BDSM stands for Bondage Discipline Sadism Masochism. This form of sexual expression usually takes the form of one dominant partner and one submissive partner using restraints and various implements to induce pain which for many equates to pleasure. The fundamentals of BDSM are a set or specific amount of time often referred to as a "session" and should be preformed by responsible parties. A motto has been in use by the BDSM community since the 1980's known as 'SSC' which stands for Safe Sane and Consensual. In other words, only go as far as you are comfortable and always use a safety word for when things may get to involved. Life's Too Short For Boring Sex so have fun!