What is '2333' mean in Chinese Slang?
This one started on a Chinese video site called AcFun, where the emoji with the ID "233" was a laughing face. Over time, people started using "233" to mean "LOL," and adding more "3s" (like "23333") made it funnier or more exaggerated. It’s basically the Chinese version of spamming "hahaha" or "LMAO" when something’s hilarious.
Example: If someone tells a funny joke, you might reply, "23333, I can’t stop laughing!"
Fun fact: Some people even say "two-three-three" out loud as a joke to laugh at something.