Slavery (Sexual) in a BDSM / S&M relationship refers to a submissive person in a relationship with a dominant person (also called a slave owner or the master or mistress) treating the submissive as their slave (or their property) Sexual slavery in a BDSM context is both a sexual fantasy or sexual roleplay. The slave master or mistress might be any person or group, although most are usually either one dominant owning one or more slaves. A sex slave and the owner, and others involved in the relationship, can be of any gender, sexual identity, or orientation.