Unicorn hunting

Unicorn hunting is the phenomenon of a coupled man and woman seeking an mspec woman for a threesome. Unicorn hunting specifically refers to when this is done in a manner that is impolite/dehumanizing to the mspec woman being sought.

Intimacy coach Stella Harris defines the "unicorn" as "an attractive bisexual woman who will show up, exhibit equal interest in both members of the couple, and then go away. This framework doesn't allow any room for the individuality or humanity of the third person."