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 21, 2012

Cum Cork

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