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just a theory 

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A phrase often used by science deniers, usually against the scientific theory of evolution. It implies that a "theory" is just an unproven "guess", therefore evolution is an unproved lie. This stems from a fundamental misunderstanding of the word "theory" in the context of science.

In colloquial use, a 'theory' may mean a "guess", but in Science, a 'theory' is defined as "a well-substantiated explanation of an aspect of the natural world." Therefore the phrase "Evolution is just a theory" makes no sense.
A: Evolution is just a theory!
B: Yes, it is. It's a scientific theory that is supported by the best available evidence. Cell theory is a theory too, do you deny that we are made of cells? And gravity is a theory too, do you jump off of bridges?
just a theory by ben-mactavish August 16, 2022
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just a theory 

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A pathetic tactic employed by creationists who strive at reminding us the obvious.
Evolutionary biologist: "Observation indicates that we evolved from lower organisms..."

Creationist: "This is just a theory."

Evolutionary biologist: "Of course it's just a theory. Am I expected to be omniscient?"
just a theory by Arjer September 21, 2007

but that's just a theory 

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...A Game Theory! Thanks for watching!
Consider your childhood ruined, and remember...
But that's just a theory! A Game Theory! Thanks for watching!

that's just a theory

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Personally I think Ness is Sans.
But hey, that's just a theory, a game theory!

But Hey That's Just A Theory 

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But Hey That's Just A Theory

But that's just a theory, a Game Theory! 

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Most commonly used by MatPat, owner of the Game, Food, Film and Style Theory channels.

Used at the end of videos to remind people that he is just making theories and might not correct.
*MatPat finishes talking about his Theory* But that's just a theory, a Game Theory!
More from Urban Dictionary

Striver 

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The striver is an interesting phenomenon that is seen across college campuses. In essence, the striver is an over-achiever who comes from a working or middle class family. He may be an immigrant. He may have been a slacker in HS who was "born again" into an academic wunderkind. Or he may just be an over-achiever who is keeping at it.

The striver is willing to sacrifice his social life at the expense of Phi Beta Kappa and Summa Cum Laude. The striver is the guy who stays at the library long after you are gone. The striver is the guy who takes 30 credits/semester and considers anything below an A/4.0 failure. The striver doesn't work on campus, he is too busy finding ways to pad his resume instead of working retail or workstudy. The striver lets his grades pay his education by applying to ten scholarships a year.

The striver is a future Soros/Fullbright/Rhodes/Gates/Marshall/etc. fellow. The striver lives to study. For the striver, their fun comes from the rewards they expect to receive in return for their diligence. Be it Law School, B-School, academia, or politics. The striver seeks to find the American Dream through academic success.
Anthony was a striver. He transfered from a TTT to an IVY and graduated in 2 years. He studied his ass off and went to Penn Law. He got a Biglaw offer. But lost it all because of an unmoderated mesasgeboard.

Successful strivers:
- Barack Obama
- Harold Koh
Striver by URM Striver January 3, 2009
Word of the Day on August 15, 2026

SkyPesos 

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Delta SkyMiles, also known as SkyPesos, is the frequent flyer program of Delta Airlines. It has a very poor value and hard to use.
- I'm trying to book an award flight to Paris, but I only have 70,000 SkyPesos
- Just forget about it, you don't have enough SkyPesos to fly anywhere.
SkyPesos by 404_name_not_found December 6, 2018
Word of the Day on August 14, 2026

Quiche Peanemis

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Quirky niche peak cinema analysis
It describes the analysis of a media piece which is quirky and niche, yet peak.
Give me the quiche peanemis on the movie I missed.
Quiche Peanemis by Mushroom2241 June 17, 2026
Word of the Day on August 13, 2026

Hate Draft

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1. Select a player (real or fantasy) during a sports draft to spite or anger one or more of your opponents because they had intended to select him/her.

2. Select a player (real or fantasy) during a sport draft to put one or more of your opponents at a strategic disadvantage.
1. Billy hate drafted Chad OchoCinco because he knew Sam had wanted him since he is from Cincinnati. Billy already had plenty of players to fill that position but wanted to make sure Sam didn't get him.

2. Billy hate drafted Peyton Manning because he was the only good quarterback left and he knew Sam had been planning on drafting him.
Hate Draft by pffler September 1, 2009
Word of the Day on August 12, 2026

jalopy 

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"I can pull James Bond stunts in a jalopy."
jalopy by watson November 20, 2002
Word of the Day on August 11, 2026
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