9+10 refers to a popular math problem that was first featured in a Vine.
It is frequently referenced as “What’s nine plus ten?” as well, spawning parodies and memes online.
The original Vine was uploaded by users @DREHUPEMSU and @WESTROSECRAN on June 22n, 2013.
It depicts a kid being accused of being stupid, the being presented with the math problem, answering twenty-one, to which the man calling him stupid repeats his claim.
Spread and Usage
The Vine would gain a lot of popularity online, with remixes appearing on Vine and reposts appearing on YouTube, as early as July 2014.
The same year, the website Huzzlers published a hoax article about the “the 21 kid” missing.
It achieved a lot of attention online, as many users were talking about it on message boards and forums.
The original poster of the Vine then reacted with a video, showing the kid to be fine.
During the summer of 2019, the “9+10” meme experienced a resurgence in its popularity as it would appear in YouTube videos, as well as Instagram, Twitter and iFunny posts.
On October 3rd, 2020, YouTube user wavywebsurf uploaded a video, diving into the story of the hoax about the 21 kid missing.
In January 2021, a Twitter account, with the name of @twentyonecount, aiming at counting down the days until September 10th, 2021, or 09/10/21.
This initiative would spawn more memes on sites like Instagram and Twitter, while also boosting the popularity of the meme.