Jan 27, 2026 · The video, also known as What's Nine Plus Ten, 21 Kid or the 21 Meme, quickly became a fad within the Vine community, leading to remixes and other parodies, and later spreading to …

You stupid what's 9+10? -Original vine.

"What's 9+10" is a slang term that gained popularity on the internet in recent years. The phrase originated from a viral video of a young boy answering the question "What's 9+10?"

9+10=21, also known as "What's Nine Plus Ten" is a Vine video meme where an African-American kid, sometimes referred as the "21 kid", was asked what 9+10 is and he answered "21" as an incorrect …

Jun 18, 2023 · When the kid denies this claim, he is asked “What’s 9+10” to which he replies “21”, which leads to his brother confirm his statement: “You stupid”. It is also referenced as “What’s nine plus …

Jun 10, 2025 · The claim that "9 plus 10 is 21" originated from a viral internet video where a child humorously insists that the sum equals 21, despite it being incorrect. This meme gained popularity on...

Oct 8, 2014 · What's 9+10 A popular vine that is commenly used as a joke. (Exp): (1) What's 9+10? (Person): twenny one

Earlier today a proof was announced that 9 + 10 = 21. The proof was announced jointly by Matthew Matheson and Habeeb Cisse, two of the most prominent mathematicians in the field.

Meme history: „9+10=21“ is an incorrect math answer that became an internet meme after being featured in a Vine video. The video, also known as „What’s Nine Plus Ten,“ became popular in the …

Jul 7, 2022 · As the meme came back in 2019, the joke confused increasingly more people who were not in the know. While 9 plus 10 does not actually equal 21, it's simply fun to claim so as a reference …