9 + 10 = 21
Bring back the legendary Vine humor by making your own 9+10=21 meme on Post2x. Our easy-to-use editor lets you customize this classic math fail to create the perfect 'You Stupid' moment for any situation.
9 + 10 = 21
9 + 10 = 21
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Frequently Asked Questions
What is the origin of the 9 + 10 = 21 meme?
The '9+10=21' meme originated from a viral 2013 Vine video featuring a young boy being asked a math question by his older brother. When prompted to solve '9 plus 10,' the boy confidently answers '21,' leading his brother to jokingly retort, 'You stupid.' The clip became an instant internet classic due to the boy's deadpan delivery and the sheer absurdity of the incorrect answer. Over the years, it has evolved into a symbol of 'internet math' and is often referenced in '21' day celebrations on September 10th or used as a reaction to highlight someone making a simple error with total confidence.
Is the 9 + 10 = 21 tool free to use?
Absolutely free to use. No hidden fees or subscriptions required for the meme maker.
Does this meme maker have AI writing?
Just describe what you want. The AI knows meme culture and writes text that lands. to unlock AI features.
Does this meme maker support custom images?
Upload yours and create a personalized 9 + 10 = 21. Works with any image.
Is registration mandatory?
Nope! Use the meme maker right away. Signing up is optional and unlocks extra features.
Can I use 9 + 10 = 21 in marketing?
Yes to commercial use. The meme works great for brand content and social media marketing.
Why use this meme maker over others?
Speed, AI smarts, and one-click posting. Built for creators who want results. Explore Post2x for more tools.
How do I get my meme file?
Hit the download button to save the meme. It exports as a PNG image file.
Does this meme maker support social posting?
Post your 9 + 10 = 21 to X instantly. No need to download first if you prefer.
Can I download 9 + 10 = 21 without branding?
Upgrade to Pro and all your 9 + 10 = 21 downloads come without watermarks. Great for creators and brands.