objectification (humiliation play): The subject is dehumanized; treated as ananimal, slave, furniture, toy, etc.
“old school”/”Old Guard”: An elitist belief in the existence of one true way of approaching BDSM, often claimed to be based upon early Leather traditions. See “Old Gods Die Hard“, by prominent Leather author and speaker Guy Baldwin.
omnisexual: Being strongly attracted to, or aroused by, both sexes.
orgasm control or denial: The practice whereby the subject is not permitted to reach sexual orgasm without permission , or for a set period of time, or sometimes at all, even though that person may be permitted (or required) to engage in sexual activity.
“out”: 1. A safeword or safe signal. 2. In bondage, a failsafe.
over-the-knee spanking (OTK): Traditional, “informal” spanking method.
Owned: The state of a submissive or slave who is the consensual partner of a Master or Owner, usually in a long-term relationship. Sometimes referred to as Collared.