n. (kum'runs) When a person has received anal-pounding from a male (of any species) and has had ejaculatry substances dispensed within their rectum (or higher within the intestinal tract, depending on the monstrosity of the perpetrator), the receiver will obtain this diarrhea-like urgency to explosively relinquish the gooey-lovin'.
Those 4 hispanic gang-bangers fucked my ass raw last night, and filled me with their moustacho-man-juice. It gave me the cumruns all morning!
by Fluffy Lee November 29, 2003
One fine summer day on the farm, buck-toothed Marianne-Annie-May-Lumpkins was fucked by her horse, brother, father, brother again, cousin and father together, and it left her all vagulent.
by Fluffy Lee November 30, 2003
by Fluffy Lee August 13, 2005