A squadron in the Marine Air Corps in the movie "Independence Day" which led the assault against the attacking aliens.
"Why we are on this particular mission, we may never know. But we do know that the Black Knights will emerge victorious once again."
by P29 July 18, 2008
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The act of showing a very cynical or chauvinistic attitude about women online to try to look "alpha".

Black knights are often guys who are disillusioned as a result of formerly trying to be white knights just to get women to like them, and are now going in the opposite extreme thinking that women love jerks. Usually however they just come across as posers or internet tough guys.
Example of black knighting:

Guy 1: Last night I brought a bitch home from the club and didn't even buy her a drink, then I kicked her out of the house right after I splooged on her face.

Guy 2: Damn that's so alpha!
by Anon989989 January 27, 2016
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When a guy rides a bike over to a girl's house, fucks her in the ass, and then rides his bike immediately home. (Inspired by Drama from the episode of Entourage when he says he fucked a chick in the ass and then made her ride her bike home.)
Person A: Dude, you'll never believe what I did last night.

Person B: What?

Person A: I Black Knighted Sara!

Person B: Wow, that's awesome! I've never successfully pulled off The Black Knight.
by theroots20 July 11, 2008
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When you are having sex with a girl, and a black guy jumps out of the closet and punches the bitch in the face.
I was fucking Tina last night while Anquan was over, and the bitch got black knighted!
by The Day Walker November 13, 2011
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V. past
To have three or four limbs removed, like Monty Python's Black Knight. Generally happens when one is owned by a bladed weapon.
Obi-wan just Black Knighted Anakin at the end of Episode III, look, he's only got his robot arm left
by masaki-kitsune March 24, 2009
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Black Knight Syndrome (BKS) is the condition of being pathologically unable to acknowledge defeat.

The syndrome takes its name from the Black Knight in Monty Python's 'Holy Grail'. In this motion picture the Black Knight loses an arm in a sword fight with King Arthur, and claims that "'Tis but a scratch". On losing his second arm the Black Knight says that it is "Just a flesh wound". After losing one of his legs the Knight exclaims "I'm invincible!", and when his second leg is cut from under him he says "All right; we'll call it a draw".

BKS is commonly found in people afflicted with the Dunning-Kruger Effect, and it is typified by people who refuse to accept evidence that demonstrates beyond doubt that evolution is a fact, or that global warming is real, or that HIV causes AIDS. Indeed, such people have an irrational inability to accept the truth of any of a number of other scientific disciplines where the physical evidence trumps their conspiracy theories, vested interests, and/or ideologies.

BKS is also frequently found in people otherwise prone to Denial Silence.

The typical pattern of a conversation with a BKS afflictee involves the opposing, educated party presenting supportable fact after fact, carefully referenced and explained, whilst the ignorant BKS sufferer simply contradicts each devastating point with random, unevidenced counterclaims of his or her own. Due to this strategy, such exchanges rarely have a satisfactory conclusion.
In an online debate about the reality of modern global temperature increase, Vincent was insistent that no warming had occurred over the 20th century, no matter how much independent evidence was presented to him, from many countries and employing many different lines of analysis.

The thread would have persisted for months, if not years, had not the other blog participants acknowledged that Vincent was exhibiting a severe case of Black Knight Syndrome, and subsequently quarantined Vincent to a rubbish thread.
by Autumn Mandrake June 3, 2011
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It’s Someone who can’t get any girls
It’s the opposite of a “white knight” which is someone who is a simp
Yo this guy doesn’t get any girls, what a black knight
by Sgetti November 22, 2020
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