The runoff from a sexual session in which the prolapsed anus of a willing participant is hammered to the point of anal fissures forming causing blood to pool into the prolapse. This mixes with the fecal matter present in the prolapsed area and the resulting sticky white love piss of the external aggressor. Creating a purple hued substance known as plum sauce.
A stage of drunkenness. Beyond hammered. Technically one is "plummed" or "plum sauced" when it is predicted that their night will end as a result of puking, passing out, or a serious felony.