Among Us, the social deduction game by Innersloth, turned sus into shorthand for suspicious after it exploded in popularity in 2020, when players accused crewmates of being impostors. The word quickly escaped the game and became a running joke across TikTok, YouTube and Discord, spawning countless edits, songs and soundboard clips that play on its silliness. Variations like this chant keep circulating because they are instantly understood by gaming audiences, even by people who no longer play, and they work as a quick, shared signal that something looks dodgy.