Wiener Twins

Two gentlemen become Wiener Twins when they engage in lovemaking with one female partner at the same time, in a spitroast or other position.

The gentlemen in question also become Wiener Brothers, but to a greater degree and with a far more powerful bond than your average pair of Wiener Brothers.

While not exactly at the same time, a Houdini 2 or houdini cheesecake both count.