troilism

Troilism is primarily a male problem, but one case of a woman who watched her husband have intercourse with a young girl has been reported in the literature (Smith, 1976).

Now if it's true, as I believe, that every woman has a bit of a lesbian streak, or at least curiosity, then it follows that the ideal way to satisfy it is with troilism — making love with two girls and a man. I've tried it myself and I know.