For the sexually, open and advanced female. This term would describe a women who is not bi. or bi curious or anything related to a one on one relationship with a female. But A woman who is turned on by how well a male pleases another woman.

For Couples, the partner is simply turned on by watching her man as he fucks another woman. She may or may not join.

For Single ladies, same scenario, although, the single female is initially interested in the male but as a Couple they are more attractive and would be open to joining them: but has no intention on just participating with the female solo. not even to let the male watch. The couples interaction together is as much of a turn on.

when you're hungover as shit after a spending a night drunk as a skunk