Glossary: Masochism: Act of receiving pain for sensual/sexual pleasure. Glossary: Master/slave: A consensual relationship in which one person receives control (the Master) when given it by another (the slave) for mutual benefit. An extreme form of D/s which usually involves a 24/7 relationship rather than a short period of time (scene or perhaps a week end.) The slave will usually accept a collar from their Master to show that they are owned.