erotic experiences are performed in a safe, legal, and consensual practice as well as benefiting both parties. The consensual practice is what helps distinguish BDSM participants from a psychiatric diagnosis of a sexual disorder. The community of BDSM has adopted the saying "Safe, Sane, Consensual" (SSC) and "Risk-Aware Consensual Kink" (RACK) and a new addition "Caring, Communication, Consent, and Caution" (4Cs). Consent has also been categorized into three groups: surface, scene, and deep consent. Surface consent has been defined as a simple yes or no. Scene consent has been described as including parameters of a top/ bottom negotiation and agreement of a play scene. While deep consent involves the mental capacity of the bottom (submissive) and the awareness of the top that the bottom is able to use a safeword. The BDSM community have a simple code of conduct concerning the boundaries of safety and negotiation to ensure consensual BDSM. Negotiation in terms of the sexual scenes is required to ensure that the BDSM play is enjoyable and safe for both parties involved. The discussion of what activities are available and the mutual definition of the play is the only way both the dominant and submissive will be able to comfortably perform. There is a complexity to negotiation depending on the trust and emotional attachment the partners have towards each other, the more familiarity between the two the less negotiation needed. The extent of negotiation depends on the partner's involvement, for example, less risk behavior the less negotiation needed. Safewords are verbal codes both partners can recognize as the end or altering of activities done in a BDSM scene. It is an important asset to continue the consent through the relationship and scene itself. The use of a safeword at any time, regardless of the intensity of the scene, usually signifies the end to a scene, or activity and possible withdrawal of consent completely. Within the community of BDSM, there are universal safewords used according to traffic lights and known as "house safewords". Red means stop everything, yellow means slow down and to not go any further, and green meaning go and continue with more intensity. There are also possibilities where speaking isn't an option and so there are "silent safewords" that are simple gestures that represent stopping an activity, for example, clapping hands, snapping fingers, or any action showing the scene must end. The use of safewords and the