When one Juuls into another's gaping anus and sucks it back in like a dementor from Harry Potter and expels the gas from their anus.
I wish my man knew how to do a "Californian Dementor".

I'm hungry for a "Californian Dementor" right now.

I heard Brad gives the best "Californian Dementors".

No one does it like Lord Voldemort .
by VisualistTV December 16, 2018
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Very dilated anus from fisting and other perverse practices. So called because it can dilate to an irregular shape, like the mouth of a Dementor (fictional humanoid from the Harry Potter books).
Fisting is just gross and will give you a Dementor's Mouth
by Nemia December 10, 2010
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While kissing french or otherwise, one partner will suck the air (soul) out of the other partners mouth and lungs. Also effective in sucking the happiness out of the room.
Steve: If I know I'm not getting any with a girl, I'll give her a Dementor's Kiss.

Dave: What?

Steve: I'll kiss her so I can suck all the air out of her and kill the mood even more.

Dave: What does that do?

Steve: don't know if I'm not getting laid it's just fun.
by Duck duck goose you jerk January 15, 2012
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In the Harry Potter series there is a creature called a dementor that is used to guard the wizarding prison of Azkaban. Their special power is the ability to take the joy away from anyone they are near and their most lethal attack is the "dementor's kiss" where they can suck the soul out of a person.

This term can also refer to a case where a poor unsuspecting dude in a bar locks lips with the ugliest broad there. This can either be done by force or with the aid of beer goggles. The result is that he feels miserable and disgusted with himself. Quite like having one's soul sucked out.
"Dude! Dude! I saw that old hag give you the dementor's kiss. You ok?"

"duuuude I'm so ugh so *hiccup* wasted I couldn't even defwend meself."
by lick_mah_clit March 24, 2012
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When a person have a good time while another people around him or her having a bad time. This also works backwards.
"Somehow He happy while everybody is sad because we write a quiz. He suck out our happyness. He is like a dementor. Let's purge him!" "He was got killed because he was owned by the Dementor effect."
by McpurplemuffinINTP4W5 November 28, 2016
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Someone who gives a blowjob so good they suck a piece of your soul out
Babe, what's the matter with you? You've been laying in bed babbling for the past 10 minutes

Nothing...I just...you sucker me retarded. You're like a goddamn dick dementor
by RememberZapata September 7, 2015
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People who are so boring and inapt of having any type of originality that they actually begin to suck your spontaneity or creative qualities. They can only be warded off with being incredibly cold or direct rejection.
Girl 1: God I hate being such a bitch but she's just been a complete Personality Dementor!

Girl 2: I know, she's nice but every time I'm with her it feels like she's sucking all my creativity away!
by gaelicstorm<3 September 14, 2011
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