Top definition
A slut with an insatiable voracity for warm semen.
I spied a semen demon skulking around the dimly lit frat house furtively grabbing at cock.
by bloomy121147 December 24, 2009
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Jun 25 Word of the Day
When someone thinks they are the main character of their life. Usually comes with a side of individuality complex, quirky style and a self centered point of view.
"I asked Jenny where the beer was and she said 'Just over the horizon, like my dreams.'"

"Yeah, that girl has a major case of Main Character Syndrome."
by CrazyandIknowit April 27, 2021
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2
one who is a bandit of man juice and uses it for the purpose of dark and sinister purposes
watch out for the semen demon (aka geoff critzer) he shall rob your clean sheets
by semen demon and frank the tank November 11, 2003
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3
A demon who comes into your room. While you and your partner are having sex, the demon pokes a hole in your condom. When your wife becomes pregnant, your child will be the 13th son of Osiris and summon satan at the age of 9 and thus rising hell on earth. This event will happen 6/6/60, prepare for the coming of Osiris's son wipe out all of creation.
Partner 1: Nothing will ruin this night! 😈😈🍆🍆

Partner 2: Nothing except for the Semendemon
by Patric Henery September 16, 2015
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4
A girl who takes a load of cum in her mouth and moves it to the back of her throat and gargles it to make a demon-like noise.
That girl is a semen demon.
by Scross December 23, 2007
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5
someone who creates devious ways of obtaining large amounts of semen
uve surpassed cum guzzler muthafucka...ur a semen demon
by chainsawcharlie86 October 04, 2007
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6
A dirty girl that craves semen so much she would summon the devil for it.
Yo I hung out with Shirley last night and she drained my balls like a semen demon
by Dildo stuffer June 25, 2020
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