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.
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Same annoying chick: "Eww that song is old and outdated, turn it off"
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
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
Sister: This meeting was to discuss the rough draft of my essay, where we discussed the subsidiary questions I added in my rough draft. We also discussed the relationship between my main title and the real-life situations I chose to use in my essay. We discussed the structure of my essay as well, specifically the Math AOK section and how it relates to the contradiction of the title. This second meeting was particularly helpful in discussing the implications of my essay claims and how to apply the title across various areas of knowledge. There were many sections of the essay that could have been cut down in wordiness and the ways of knowing required further and more in-depth analysis.
An absolutely foolproof way to keep minors from viewing content deemed "too mature" for them to watch.
Billy: "So I was trying to watch some videos for an M rated game, and I ran into an age gate, so I put in my real birthday. SOMEHOW it managed to figure out that I am 12. CURSE YOU AGE GATE!!!"
Bill: "Fucking age gate! *quick scroll* THERE! I was born on January 1, 1904. Fuck you age gate."
A)
The Crud that collects under the keys in a keyboard. Usually more severe in the keyboards of programmers and webmasters as they tend to spend a lot of time at the the computer and thus eat at their desk. Mainly affecting IBM Model M (clicly) style boards.
B)
Can also be used to gross out Non-Techie people
A)
Bill: want to go to the club?
Bob: No, I've got to clean out my board chow, keys are starting to stick.
B)
Bill: Want to go out to get a bite?
Bob: No, i am just going to have some of my board chow/
Bill: Whats' that?
Bob: The food scraps that collect in my keyboard; Want some?
Bill: *GAG* *HURL* *GAG*