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That's just a theory and Game theory, Film theory, Food theory, SO MANY THEORIES!!!!
MatPat made another theory about fnaf. WHEN WILL THE FNAF THEORIES BE OVER!!
MatPat by chick-fa-le October 6, 2020

MatPat Effect 

I sense of uncanniness upon seeing the original version of an image that has been more commonly edited or modified for visual presentation.
Guy 1:Woah, this original image of MatPat is rather uncanny, bro.
Guy B: That's the um, the uuuuuuh, hold on...
Guy 2: *Googles it on UrbanDictionary.com*
Guy II: That's the MatPat Effect
Guy A: Ok
MatPat Effect by Joshua Hoodsen Fooh November 30, 2021
The one guy who can't even catch up with Scott Cawthon.
"Dang, that guy made me look like MatPat when he said, "Omae wa mou shinderu."
MatPat by Casual Boi July 18, 2018
An amazing YouTuber and Diet Coke addict who makes theories about video games and movies. He also does livestreams with his wife, Steph, at 4pm PST every weekday. His channel started out with him as a dorky theater kid doing auditions, and while he's still a dork he's a cool dork. Also pretty cute if I do say so myself.
"Hey, who was that nerdy YouTube guy you're obsessed with again?"
"Oh, yeah, that's MatPat."
MatPat by PoweredByDietCoke June 8, 2017
Noun
An internet idol whom inspired a culture and highly intelligent society. Host of Gametheory, one of the most highly intellectual beings to walk Earth.

Verb

To commit a highly intellectual action.
Noun:
MatPat is my idol! I tune in to Gametheory all the time!

Verb:
If my calculations are correct, which they are for I Matpatted, I will have created a quantum accelerator.
MatPat by MatPat FanClub February 8, 2021
Matpat is a diet coke addict who did in someway get his youtube channel ( The Game Theorist) famous. He does livestreams on youtube with his wife steph. He even has a cat called Catpat and he is the only reason anyone watches the livestreams. Matpat is a real nerd.
Whos that youtuber that talk about videogames in a nerdy way and drinks diet coke?

It's Matpat.
matpat by A Loyal Theorist June 2, 2016
More from Urban Dictionary

trucker's tan 

A sunburn or suntan focused on the left arm. It is caused by the left side of the body being the only half that gets exposed to sunlight while driving. Presumably, it would be located on the right side of the body in countries where they drive on the left side of the road.
I had a trucker's tan after driving for 10 straight hours on a sunny day.
Word of the Day on October 5, 2026
The phenomenon where adults salivate at children's toys
Every time I walk into the toy aisle, I catch myself kidulting over the latest action figures and LEGO sets!
kidulting by Emotional Cruiser October 12, 2025
Word of the Day on October 4, 2026
British slang for a scientist or technical expert, esp . when the speaker is not certain of the expert’s specific field of study. Not necessarily derogatory, but typically used by persons without a technical background. In the US, the equivalent would be “egghead”, “squint”, or “geek.”

Origin of the word is unknown. Started sometime in World War 2. Given the typical evolution of British slang, could easily have started because what these experts did was confusing or “baffling” to the common person.
According to the boffins downstairs, the murderer used a serrated blade.
Boffin by Agnon February 11, 2023
Word of the Day on October 3, 2026

Pee Calculus

When you have to pee in a movie but don’t want to miss anything, and must do the following mental equation: will the amount I have to pee cause enough discomfort to diminish my attention capacity for the remainder of the movie to an extent which is greater than the amount of the movie I would miss by making a mad dash to the restroom.
I saw Satantango last night, wonderful film but by the 5th hour I had to start doing pee calculus.
Pee Calculus by anorlondo October 1, 2026
Word of the Day on October 2, 2026
Literally "dirty" pronounced with a West Indian accent. Can also have a positive connotation, for example Sean Paul's album title "Dutty Rock".
"The girl is pretty but she corrupt and dutty!"

or, in a positive usage:

"Booya! That freestyle was dutty!"
Dutty by J Hall April 3, 2003
Word of the Day on October 1, 2026
korean word for madam, older woman
Ajumma wait a moment
Ajumma by aintnotinbutnice July 5, 2009
Word of the Day on September 30, 2026
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