Where did the phrase IYKYK come from?

[radarro]

IYKYK started appearing online around 2019, mainly on platforms like Twitter and TikTok. It quickly became a viral acronym used in memes, videos, and captions. People loved it because it created a sense of mystery—only those who truly "get it" understand what's being said. Over time, it became a part of everyday online slang, used by teens and adults alike to talk about moments or references that only a few people recognize.
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