1 definition by Seamoss

Top Definition
The hardened deposit of semen left in the male urethra after masturbation or intercourse. Usually formed when one doesn't "clean the pipes" after such activity resulting in a temporary blockage that can lead to random urinary problems and sometimes temporary pain.
Dude, I forgot to piss after whackin' off and now I got a wicked cum-plug. I just accidentally pissed all over my bathroom.
by Seamoss May 06, 2007

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