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A phrase used to describe one-upping a friend with a very trivial, and often unnecessary, correction; typically referencing statistics and other sports related facts; named after Kyler Neufer (alternative spellings Nuefer, Newfur, Neufter), former Division 3 Collegiate Athlete notorious for this one-upmanship behavior; popularized by NHL forward Josh Norris.
Craig: “Lebron is having a tremendous year, he’s averaging 33 points a game!”
Kyle: “Actually, its 33.2 points per game.”
Zac: “Damn Craig, you just got neufed!”
neufed by handsNfeetRmangos July 14, 2022
Related Words
Typically applied to online regularly-changed/updated video games.

To "nerf" something means to reduce its 'power' or effectiveness within the game. Often times this is to solve some problem in the game (such as an 'overpowered' weapon/ability or super effective strategy), or to push the players in one direction or another (such as a new cosmetic/item/character).

Nerfs affect the 'meta' or prevailing strategy/characters/items used to win the game. In this way nerfs also give control to the developer of how the players play the game. i.e. nerfing a commonly used item to discourage the community from playing with it.

Some nerfs can be so drastic they change the very fundamentals of the game, and are often a contributing factor to the size of the playerbase, for good or bad.

Outside of games, this would again mean to reduce the things 'power' or 'effectiveness'. The exact analogy that gave birth to this term, is that of a Nerf Gun, compared to a real gun.
Oh man, they totally nerfed 'Titans Armor'! Guess I'll stop playing Golem now :/

They nerfed Irelia again?? Oh wait, its actually a buff. <-- (opposite of nerf)

Great, so now all the free-2-play guns are nerfed, guess I have to buy some to keep competitive. :(
The term "nerfing" comes from the online gaming world of Ultima Online.

At one point in the game, the developers reduced the power of swords in melee combat.

This resulted in players complaining that it was like they were hitting each other with nerf bats, not swords.

From then on, if ever something gets made less worth while than it had been originally, it is considered 'nerfed'
"Oh man, they reduced the dmg on the berserker class and now it's totally nerfed!"

"Damn, the Devs nerfed those axe's real good!"
nerfed by Dave Elliott January 11, 2005

Neffed the Meeting 

To join a meeting under the guise of one topic, only to direct the discussion to a more entertaining (or often business-centric) conversation.
We met to discuss the audit, but he neffed the meeting and all we talked about was Monty Python
Neffed the Meeting by Genevieve Magoo September 23, 2010

Neefed It Up 

To mess up or cause a failure, this term was popularised by the YouTube Channel Oliver Aged 24 (HowToDrawReallyGood ) where Neef (a previous student of his) would show some of his pieces of work that he created using the tutorial, they are always terrible and referred to as being 'Neefed up'.
"You have Neefed it up"
"You've really Neefed this up!"
Neefed It Up by JoeAged13 June 1, 2013
To be made a fool of; To make a fool of; To confound or prove wrong; embarrasing someone
also Total and undeniable dominance of a person, group of people or situation as to make them/it akin to ones bitch.
Dude! you just got Neffed up the A! or
You were really neffed when you walked in on your girlfriend cheating on you.
neffed by alex neff January 2, 2008
More from Urban Dictionary

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
Short-hand for the word floccinaucinihilipilification, meaning the estimation of something as valueless (encountered mainly as an example of one of the longest words in the English language).
After we broke up, he was floxi to me.
floxi by Dr. Geek May 13, 2009
Word of the Day on September 28, 2026
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