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!
that moment when you have jizzed over your hands and haven't got any tissue so you have to leg it to the toilet to wash yourself. Mainly for guys.
Ah im so sorry hannah i can't talk, tbh i'm on a quick cum-run