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greenness envy 

The anxious feeling that someone else has a better reputation than you for protecting the environment.
Everyone admired my new Prius and the solar collectors on my house, till my neighbor bought an all-electric car and put up a wind turbine. Now I'm suffering from profound greenness envy.
greenness envy by bglassman April 7, 2010

2 Greenies for a Blackie 

The art of skillfully gesturing someone to roll down their car window at a stop light after witnessing them successfully pick their nose and eating it, by a using hand cranking gesture. When they roll their window down ask them if they would be willing to trade you "2 greenies (2-GREEN colored boogers) for a blackie." (a BLACK colored booger)

A) Letting them know you actually watched them the whole time, while they excavated around in their nose for their boogers & then ate them.

B) Embarrassing the fuck out of the nasty bastard for subjecting you to having witness that disgusting act they performed while in traffic, at that stop light.

C) Hopefully reminding them in not so many(unspoken)words, other than what you already said to them- it's a filthy habit that they should have given up as a small child.
"Hey dude that looked pretty tasty, and I didn't have my lunch yet. Yours look way
better than mine, bummer. Next time I'll trade you 2 greenies for a blackie."

gennessey 

DAMN GENNESSEY IS SO AWESOME AND FINE AF
gennessey by G_A_M January 18, 2017

Greyness 

When your penis starts to go grey
I heard Steve has greyness
Greyness by Slashing.exe November 2, 2022

conservation of greatness

Usually used in sports related situations (but also applicable to all life situations), conservation of greatness describes a situation where a person has just done something earth shatteringly amazing, and then immediately proceeds to attempt another amazing action. The second action has 1% chance of doubling the glory, and a 99% chance of failure, which includes a 50% chance of making the person look like an absolute fool.

Popularly used in the game of ultimate frisbee, but possibly originating elsewhere.
'Conservation of greatness' is rarely used as part of a statement, but instead is the entire statement, said after witnessing the the failed follow up action.

Said with great joy when an opposing team fails to compensate for conservation of greatness, but with utter frustration when your own team mate has just made a fool of himself.
An environmentalist who practices 'traditional' outdoor skills and pursuits (hunting/fishing/winemaking, etc) on the grounds that they represent a more sustainable local alternative to industrial agriculture. The word's origin is rooted in someone who acts like a redneck, for "green" motives.
"I never figured that greenneck would be able to fit an elk his shot with the bow and arrow into the back of his hybrid Prius, but he 'got-er-dun'".
greenneck by forager June 5, 2009
More from Urban Dictionary
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

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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