When you shove a potato in your vagina, or you wank your dick and ejaculate all over it.
"Wow! You gave Sally a sementator?!"
verb - the process of draining semen from ones vagina after intercourse without a condom.
After fucking my girlfriend, she had to go sement.
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A shot of liquor made by combining the semen of 2 or more human males, and a splash of vodka. The semen is harvested immediately prior to serving.
"Bobby and I got really bored with traditional shots, so we jerked each other off and made some sement mixers."
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The act of becoming filled with semen, even if no pregnancy occurs.
I've semented my wife several times. Now we just wait.
When someone ejaculates on the bottom of your feet then you get stuck to the floor.
The sex was so messy I stepped out of bed and was instantly semented to the floor.
To sement -- to masturbate at, while thinking of, looking at, or otherwise picturing a certain person or thing.
Pronounced like "cement."
Examples:
"I semented Trisha last night."
"I saw some guy on the train earlier; he was just staring and sementing me."
The result of hot water coming into contact with post-coital fluid.
Dammit it Geoff, I'm going to need a knife to get this sement off the bathroom floor before my roommate comes home!