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Expansion 

What if our conceptualization of the shape in which the universe expands is entirely wrong?
Hym "Ok, so everybody has probably seen the picture of the expansion of the universe as it relates to the big bang, right? If not, look it up quick. It's like a Kamehameha of spacetime. But WHAT IF... There is a 4th dimension... Right? Now, I know that's not profound or original... YET! Ok!? I'm getting to that part! Stay with me! So, imagine the way in which this 4th dimension exists... Allows for every point in the universe... To be considered the edge of the universe... So, when a star collapses... And creates a black hole... It's like a hole in a balloon... So the contents of the universe are spilling out into the not-universe... Even though it doesn't look like the black hole is at the edge... And the REASON... that smaller stars don't create black holes... Is that they don't generate enough force to pop the balloon... And you could say "Well, we've seen 2 black holes collide so how could 2 balloon holes interact with eachother in that way" and there the balloon analogy breaks down.... But I think it's and interesting concept. That the universe is both expanding and deflating at the same time and as stars collapse and turn into black holes... Eventually, there will be a tipping point where the rate of deflation supersedes the rate of expansion and begins to collapse back in on itself... It's kind of like oscillating universe theory except I have a 4th dimension that does whatever I need it to do to allow for oscillating universe..."
Expansion by Hym Iam January 16, 2024
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Expansion jutsu 

When your in bed with a girl and you are about to buss you scream to the top of your lungs expansion jutsu and you put all your fingers in her asshole and stretch her asshole as wide as you can and you cum in her asshole
Man i did some expansion jutsu on a hooker last night she wont be doing anal for a while
Expansion jutsu by Lenman1 January 19, 2021

Expansion Pack 

Slang for gay.
Jake: Harris is an expansion pack
Expansion Pack by JakeB_YT December 14, 2018

Expansion jutsu 

Your in bed with a girl and when you are about to cum you scream the loudest you can expansion jutsu and you squeeze all your fingers in her asshole and rip it apart and then cum in her asshole
Man i did expansion jutsu on a hooker last night
Expansion jutsu by Lenman1 January 19, 2021

Expansion Pack 

A container with "Expansion" cans of soda or beer.
I wanted to buy a six-pack of Coke, but the Expansion Packs were on sale, so we bought those instead.

How many sodas are in an Expansion Pack? Expansion, duh.

PS2 Expansion Bay Hiding Spot 

On a PS2 (the fat model) there is an empty slot in the back meant to put in a hard drive and network adapter, this empty spot can be accessed by taking off the network adapter or cover on the back. This is a great place to hide stuff like your weed, cigarettes/cigars, cans of snuff, small flasks, money and electronic devices etc. It's a great hiding spot because nobody will think to look for anything strange in there(just make sure to close up the back after) and no one will suspect a thing!
Person 1:"I need to hide this herb somewhere for a bit!"
Person 2:"Put it in my PS2"
Person 1:"How the fuck would i do that?"
Person 2: -opens the back- "See?'
Person 1:"ABSOLUTELY PERFECT!!!"
Person 2:"Yeah the good ol' PS2 expansion bay hiding spot trick!"

Octo Expansion 

The DLC to Splatoon 2. Might as well define literal hell.
"Hey I got Octo Expansion."
"You let the 8 Ball Fall - Test Failed."
Octo Expansion by Woomynator May 30, 2019
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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
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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

Slop Grenade

When someone uses AI to generate a large document, slide deck, or piece of code/software and tosses it over the fence for you to deal with.
Chad: Hey Brent I sent you the new backend API change to review, it’s only 100 files changed.

Brent: he just tossed me a slop grenade
Slop Grenade by Joe Squid September 28, 2026
Word of the Day on September 29, 2026
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