User:Eurodog/sandbox157

Devil's triangle can be a slang reference to a male-female-male sexual threesome.

Etymology
References to the phrase date back to as early as 1915


 * triangle n. [1930s+] a 3-way relationship, in any combination of sexes and sexualities.


 * If we refer to the actual definition of The Devils threesome according to Sextionary this triangle is comprised of two men and one woman. I wonder if it gets its title from some woman long ago declaring the "Devil made me do it!"


 * "Pythagorean sex triangle," composed of Isis (horizontal), Osiris (vertical), and Horus (hypotenuse).