Dementor's Kiss 

this is when you are making out with your significant other and you casually put your hands on their cheeks, but then quickly plug their nose and try to suck the air out of their lungs.

Dame: mmm baby I do love makin out with you

Fella: your lips are so soft, I could do this all night

Dame: c'mere closer

Fella: what you got in mind for me

Dame: (sucking in) Haaaaaarrrryyyy Pottterrrrr

Fella: GASP GASP I do hate the Dementor's Kiss

Dementor's Kiss by RJ_MacReady February 6, 2012

Dementor's Mouth 

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

Dementor's Mouth by Nemia December 11, 2010

Dementor's Kiss 

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.

Dementor's Kiss by Duck duck goose you jerk January 24, 2012

dementor's kiss 

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."

dementor's kiss by lick_mah_clit August 9, 2012

Dementor's Kiss 

When smoking, inhaling the smoke someone else is exhaling while kissing.

Jaime: Yeah Ben and I were smoking and we did some Dementor's Kisses.

Laura: Wow you must have been baked!

Dementor's Kiss by spookymulder September 1, 2013

Dementor's Kiss 

The act of sucking the air out of your partner's lungs during a make-out session.

During a make-out session with my boyfriend, I (quite sweetly) uttered the line “you take my breath away”. He leaned in to kiss me again, and as we were doing so he literally sucked the air out of my lungs before exclaiming “That’s what it feels like to be a Dementor!”
The worst thing…his geekiness actually turned me on a bit.
~ A Prisoner of Azkaban, College Humor, after experiencing a Dementor's Kiss

Dementor's Kiss by Nosperato January 15, 2012

Dementor's Kiss 

the act of drinking water after chewing mint gum

The Dementor's Kiss temporarily caused Susan to have an existential crisis.

Dementor's Kiss by peachcrusts April 20, 2018