1.) The Suicidal King card in the deck of cards. (He's the one with the sword through his head.)
2.) Unlike a "Hopeless Romantic," a King of Hearts does not day dream about a romantic life, but has already lived through it and died from it. The King of Hearts is a symbolism of someone who is reborn, after the experience of both the joys and tragic pain of love. They then return and master love with more self respect.
"In the card game of romance, the King of Hearts is the highest hand."
by Kram N February 4, 2015
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As a noun, someone considered likely to commit suicide, someone who has attempted committing suicide in the past or made plans to, etc. Used to describe people who are actually serious about it, or people who are probably serious about it but haven't revealed it to anyone just yet.

Derived from the picture depicted on the King of Hearts face card included in a deck of 52 cards. In most basic decks, the King is shown holding a sword horizontally behind his head, making it look as if he's stabbing himself through the head.

In a verb sense, to pull a king of hearts would mean to commit suicide, or try to.
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"Oh god, I think I just flunked, I forgot about that friggin test! My parents are gonna kill me! Maybe I should just do the job for them"

"Hey, chill man, it was just a math test. Ask to retake it or something, or deal with it, you're no king of hearts"
by meowfox of doom January 4, 2008
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When two guys sit on each other's asses while penetrating each other looking opposite directions looking like a fucked up face card
"Bro you wanna be top or bottom?", Dude 1
"Can't decide.. King of Hearts?", Cova (Dude 2)
"King of Hearts!" , Dude 1
by VidKami November 16, 2017
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When a white devil bitch working in cooperate America tries to make a joke in an email and shits all over herself.
That bitch so king donut hearted that email.
by Bitchbeerrun February 25, 2016
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A member of the shuffle alliance with a crest of the king inside a heart on his hands, way too overpowered and once saved human civilization from cyborg cells.
Holy shit! The king of hearts just destroyed a devil colony with love.
by ioisiw July 15, 2023
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