The Metaverse is a virtual world, described in Neal Stephenson's 1992 science fiction novel Snow Crash, where humans, as avatars, interact with each other and software agents, in a three-dimensional space that uses the metaphor of the real world. The word metaverse is a compound of the words "meta" and "universe".

BDSM is a blanket term referring to the practice of a wide spectrum of activities and forms of interpersonal relationships. While not always overtly sexual in nature, the activities and relationships within a BDSM context are almost always eroticized by the participants in some fashion. Many of these practices fall outside of commonly held social norms regarding sexuality and human relationships.