Five or more
consenting persons engaging sexual intercourse in the same place over the same period of time. Synonymous with
group sex. Common
props include drugs, alcohol, toys, etc. but are not neccesary.
Sex with Dick, Jane, and Sally: Threesome
Sex wirh Dick, Jane, Sally, and
Henry: Foresome
Sex with Dick, Jane, Sally, Henry, and
Susie:
Orgy