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mainstream meme 

When a meme has become so popular that it appears on the news, TV, or anything else outside of message boards. When this happens, it is deemed too popular and forever called "OLD".
Rick Rolling has been a mainstream meme for a very long time. Cut it out.

Mainstream music 

Music that always plays on the radio and the TV, and is on the top 40 list on every music software like iTunes and Spotify. It is quick-made on a computer, usually featuring not very good but good looking musicians (if they can be called that) and it is un-original and boring. People without any taste in music listen to it because it's easy to find and everyone else listen to it, so then they don't need to worry about being considered "different". Mainstream music songs usually stay on the top-lists for a couple of months or maybe a year, and then they're gone. Also, people who listen to it usually would call a 2 year old song "very old", though bands like Led Zeppelin still rock anyone's brains out with their songs from the seventees.
Annoying teen girl: "Oh my god, have you heard that new Rihanna song? I love it!"

A month later, someone puts on the same mainstream music song

Same annoying chick: "Eww that song is old and outdated, turn it off"
Mainstream music by rocknroller2012 December 17, 2012

Mainstream crap 

Music that focuses on getting stuck in your head and becoming so ubiquitus that you are forced to like it or else you will have clinical depression from hearing it so much. This music is almost always made by humans who are often called musicians (but in all truth, are not musicians) who manipulate their image for monotary reasons. This music often focuses on sounding much more technological than musical. Much pop and hip-hop to enter the top 40 has been mainstream crap since the '00's.
person 1: Man, Lady Gaga, The BEP, and other mainstream crap has been all over the place, it makes me want to commit suicide

person 2: I use to think the same thing, but now the music has grown on me

person 1: Nooooooooo! You failed in the battle to not get that music stuck in your head to the point where you have to like it! What has become of this world
Mainstream crap by Suteer Yarchaz January 18, 2010

Mainstream rap 

Bullshit ass ripoff of the true art form of Hip Hop
Retard: OMG, I Love MTV and Mainstream Rap
Me: Go Die
Mainstream rap by A-Z September 3, 2006

Mainstream Junkie 

Someone that is on top of everything that's mainstream. This person knows about everything that is new and is quick to jump to anything that is new. A mainstream junkie can be good or bad.

The fake ones are the followers only doing it because the real ones (leaders) are doing it.
Wow, last year he liked Pop music, now he's on 50 cent's groan. What a Mainstream Junkie.

Did you hear that new Travis Porter. That shit is so dope and new. It's changing the way I think about certain things. Those guys are some Mainstream Junkies

mainstream sellout 

The sixth official studio album by machine gun Kelly
mainstream sellout by Jaydubhs March 7, 2022
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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