The blockage that is created by dried semen on the tip of your dick after sex.
You wake up at 3:00am to drop a line after dozing off after sex, and the urine gets blocked for a moment by the sement and then bursts out like a geyser (which kinda hurts).
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Semen that has dried and become hardened.
I forgot to clean up after ejaculating, and I found sement on my blanket 3 hours later.
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Dried up cum or semen on ones body part.
"Dude, How was that chick last night?
"Dude she semented my face!!"
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Semen that has come into contact with water and turns into a cement-like substance.
I came in the shower, but I had a hell of a time washing off the sement after.
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Jizz so thick that it can be used like glue
My jizz was like sement in my girlfriend's mouth, she couldn't open it for 4 days.
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When your semen fuses two or more objects together.
Throwing a towel on your cum puddle will result in it being semented within a 12 hour period.