Adapter cable

A 3 way sex position involving a gay man, a bisexual man and a straight women.

The bisexual man positions himself between the gay man and the woman, facing towards the woman. The gay man fucks the bisexual man in the ass, while the bisexual man does the same to the woman, so that the gay man is fucking the woman vicariously through the bisexual man, much like an adapter cable for two non-compatible wires

John and Larry want to have a 3-way with a woman, but because John is gay Larry has to play the Adapter Cable part