Group Sex

Sexual activity by a group of people in the same place and at the same time, usually involving exchange of partners, observing each other, and different variations of intercourse. The groups may be entirely composed of heterosexuals or homosexuals, or a combination of the two.

Chain sex: A group-sex practice in which a number of people engage in sexual contact at the same time; for example, A has intercourse with B, while B performs fellatio on C, who engages in cunnilingus with D, etc.

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