It is the act where two+ lovers take a shit in a large metal mixing bowl and mix the feces together. Then each of you take a handful of the mixture and swallow it. Then after waiting a total of five minutes you vomit on your respective lover's chest and make hot sweet love with the smell of vomit and shit hanging in the air.
Guy 1: Me and my girl decided to try the Milford Junction last night.
Guy 2: Oh really? How did it taste?
Guy 1: Like shit!