Top Definition
Dried plug of semen blocking proper urethral flow. Usually created if a man doesn't urinate after sex. Extremely painful, but temporary.
"I thought I had kidney stones for a sec there...turns out it was just a cum cork."

or

"That cum cork came flying out and landed on Jack's toothbrush."
by MontgomeryQ July 28, 2008
1 more definition
8 Words related to Cum Cork
That extra bit of semen that stays in your urethra post-ejaculation.
Dude, after banging my girlfriend, I took a piss and shot a massive cum cork
by Allybabba March 20, 2012

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