A reference to an anime from Love Live! Sunshine! when Aqours didn't reach the required applicants, falling short at 98. It causes their school to shut down, despite qualifying for the Love Live! Finals.

Becomes a funny number and a meme by the fandom, usually followed with Chika crying in the background.

done with something or someone

The theoretical percentage of people in the world that are complete idiots, most of which make people believe they are not stupid by merely repeating smart things they've heard elsewhere (TV, radio, etc.). Everyone has moments that are completely idiotic. This in, and of itself, do not define a person as a 98. However, when a person will repeatedly make the same error, 98-hood is assured. There is a hierarchy of ignorance associated with this theoretical statistic, that goes something like this:

90%-Stupid people who have had little to no education, from any source#
5%-Stupid people who have completed a government minimum standard education, to no avail
3%-Stupid people who have completed more than the minimum standard education, still, to no avail
0.5%-Inherently Smart people who have had little to no education, from any source
1.25%-Inherently Smart people who have had a government minimum standard education*
0.25%-Inherently Smart people who have completed more than the minimum standard education*

In the corporate world, 98's are sometimes able to thrive, though they may be 'removed' from several jobs before learning how to fool most of the people around them into believing that they are contributing. Wealth is not an indicator of being in the 2 percent. Some 98's can fool nearly anyone into believing that they are so good at something, that they can amass a hugh fortune. Conversely, there are homeless and destitute people who are genius-level or higher, but due to mental illness or personality disorders, will, regrettably die undiscovered. Education level is not an indicator either, Albert Einstein was a high school drop out, while Steven Hawking acheived a PhD, both of which would never be considered a 98. While Dr. Phil on the other hand... is undecided.

*I can't speak for other the eductation system in other countries, but the American education system and requirements are a tragic joke. Leaving most students behind and graduating illiterate students. Exactly zero students leave high-school prepared for anything other than McJobs. Many 98's would have ended up in the 2 percent, if not for the poor education system this country has.

#Keep in mind that this number includes people that have never seen an automobile.

In the Geometry Dash community, a 98, commonly referred to as "the devil's number," is a term used when a player dies at 98% on a level, especially extreme demons. Since these levels require godlike skill to fully complete, dying at 98 is an example of extremely bad luck, since if the player had persevered for a few seconds longer, they would have completed the level. This is especially scathing when verifying a level, since the level needs to be fully completed for it to be rated.
Two notable examples of this are Mefewe on Sonic Wave and Knobbelboy on Bloodlust. Mefewe died to a part which he buffed, causing him to quit the game. Knobbelboy died on the third-last spike. Both Sonic Wave and Bloodlust were the hardest levels in the game in their times.

"98" is a term used to secretly telling the world that the person in question will comit suicide. This term is derived from the song by Mili with the title "Nine point eight".

"Thats so 98"

In reference to a post made about Dubstep being the future
Youtube video named "Battleship soundtrack 2012 FREE DOWNLOAD"

98 is a mobtie of yng nepalese / south asian immigrants in portugal and spain.

The best UK drill rap group (or family as they call themselves) known to man. All members have sick rap styles and bars and the group even has a singer. The group consists of Ko, V9, DA, Al Chubbino, Billy Billions, Jimmy, Stally, Unkown T, Hitman and Mazza. (My personal favourite members are Ko, V9 and Stally)

The score mefewe got on sonic wave