An advanced Munge.
Before performing a Munge, a guy copulates with the corpse to ejaculating inside the dead woman's vagina. A munge will now allow the lucky man to consume his own seed along with the decomposing fluids excreted by the dead woman.
That dead chick was so smokin hot that I couldn't settle for a simple Munge. She was good enough for a Double Stuff Mungio!