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	Off Premise	~	An event or location at which sexual activity is prohibited. If members wish to get together sexually they either go to a hotel, home, or else where for pleasure. "You don't have to go home but you can't play here!"
	On Premise	~	These are events usually held at house parties or private clubs. Sexual activities are allowed in designated areas or bedrooms. There are also safe rooms where sexual activities are not allowed to take place.
	Open Swinging	~	Sexual interaction among couples who swap using the same room, or bed.
	Orgy	~	A party which involves unrestrained indulgence, especially in sexual activity. This term is usually used to mean group sex of either large numbers or liberal orientation.
	Orgy Room	~	A room, either in a home or a club, set aside for the purpose of group sex, usually with wall to wall mattresses. Sometimes refered to as an group room.
	OSO	~	Other Significant Other
	OWO	~	Slang for "Oral Without Condom".