A social, erotic swing party where sexual activity is common and available, but not required or assumed. Also used to describe swinging where petting is involved, but there is no exchange of partners for sexual intercourse.

Sexual activity with out intercourse with others then the own partner. Other words, no full partner swap.

Watching another couple during sexual relations. May also include foreplay with other partners, sometimes including oral sex but no vaginal penetration. Can add spice to a couple's relationship and allow them to have fun without the risk of disease or jealousy. Many couples start out as soft swingers as they first explore swinging. But don't think that soft swingers will always convert to full swapping. Threesome: A couple and a third party (extra male or female) mutually engaged in sexual activity.