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Any brilliant move made in board games like chess or the Chinese game of Go. It refers to the legendary game of Go between an AI, AlphaGo, developed with Google Deep-mind and a legendary South Korean Go player with the title of 9Dan (the highest rank in Go), Lee Sedol.

After losing 3 games in a row to AlphaGo, on move 78 of the fourth game, Lee Sedol made a move that he thought "was the only move that made sense". This move, not only lowered AlphaGo's own prediction of winning from the upper 90% to a measly 45%, but it was the decisive move that won the game for Lee Sedol.

To put into perspective how fucking mental this is, the AI AlphaGo was developed by multiple INCREDIBLY smart computer scientists, TWO entire years in the making and training. This AI has the entire catalogue of previous Go games played and even played against itself to train, cataloguing those games as well. For Lee Sedol, a human, to beat a machine on the tier of AlphaGo is insane to imagine. Even the AI itself was shocked at that move, to the point where it had to teach itself how to resign, with the text "AlphaGo resigns. The result 'W+Resign' was added to the game information." displaying on the screen. THE AI HAD TO LEARN HOW TO RESIGN BECAUSE IT WASN'T FUCKING EXPECTING THAT.
I swear to god, every move that fucking Carlsen guy makes is a move 78, is he even human?
Well he's the has the fancy title of "World Chess Champion" for a reason
Yeah that's true.
Move 78 by icysandwich April 4, 2021
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Summer Teeth 

When someone has a lot of missing teeth.
Mannn, that dude has summer teeth!
What do you mean?
Summer here, summer there...
Summer Teeth by BeckPot August 2, 2012
Word of the Day on May 24, 2026
The grindset is a contemporary ideology of self-exploitation disguised as strength, deeply tied to the aesthetics of the “sigma male” and to new digital forms of patriarchy. It promotes the idea that human worth depends on productivity, economic success, absolute emotional control, and the ability to work endlessly, turning vulnerability, rest, community, and tenderness into signs of weakness. Beneath its rhetoric of discipline and power often lies a profound inability to relate healthily to pain, fragility, and human interdependence.
“That’s the grindset, brother. While weak men sleep and complain, sigma males stay disciplined, work in silence, suppress emotions, and build power while everyone else wastes time chasing comfort.”
Grindset by Omega-Male May 22, 2026
Word of the Day on May 23, 2026
well known from south park
rednecks get angrry that future folk took there jobs so they yell
They took ouare jerbs!
Them future folk took ouare jerbs!
jerb by Jimberley Kim April 7, 2005
Word of the Day on May 22, 2026
An Irish phrase meaning shit, derived from ass
(Not to be confused with the literal description of one's buttocks)
"Did you hear the song Aylek$ dropped?"
"Hardly. Her music is absolute cheeks."

"My boyfriend say LaFlame is cheeks."
"Tell your boyfriend I said it's his mixtape that's cheeks."
Cheeks by thecartisan April 26, 2020
Word of the Day on May 21, 2026

sans sheriff 

Lawless use of fonts or typography, with no regard to aesthetics or legibility
I'm putting this CV straight in the bin. Written totally sans sheriff.
sans sheriff by Jamarley July 3, 2019
Word of the Day on May 20, 2026

Breadhead 

Someone who is addicted to obtaining money and building wealth. A money addict and fanatic. Breadheads often work more than one full-time job, and some even participate in illicit activities to "obtain the bread".
A breadhead is like a crackhead, but for money instead of crack.
Breadhead by 🅱️ U S 3 4 8 March 30, 2022
Word of the Day on May 19, 2026