The dried seman that accumlates at the tip of man's urethra after sex. During the man's first post-coital urination, the urine stream will go in erratic, unpredictable directions until the cumplug is burst.
Woman: Why is there piss everywhere?

Man: Baby, it took forever to pop my cumplug after so much hot lovin'.
by fozter November 10, 2009
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Like a plug for drugs and such, this is the person who always wants to ejaculate all over your face, usually for 5$ a pop. Other word for prostitute
Jamal pulled out the 9 because I called him a cumplug
by beastmasterLN2022 September 29, 2020
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