Group sex.

Intercourse which are made by three or more different sex partners group. A distinction is made at least 3 threesome sex variants; svapings – partners in change; šerings – sex partner watching; svingings – all common sexual activity. Partners is unlimited. In the experiment, which took place Sandstaunā, California, took part at the same time up to 400 pairs. Specialists believe that the group sex parties usually prone deviation whole complex: vizionismam, Exhibitionism, pikacismam u. c.