A "brainrot" meme involving references to the number 67 that became popular in 2025. It has no fixed meaning (and the fact that it has no meaning is part of the joke), but is associated with the song Doot Doot (6 7) by Skrilla and a video of a boy yelling "six seven" at a basketball game while making an excited gesture with his hands. Known in Japanese as rokunana (六七, ろくなな).
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