CJ is Carl Johnson, the protagonist of Grand Theft Auto: San Andreas, released in 2004, and one of the most recognisable characters in gaming. Short voice clips and name callouts tied to the game have circulated for years in edits and soundboards. This reverbed version takes a simple Hey CJ shout and stretches it with echo, turning a game reference into a standalone meme sound. It stays popular because the name is instantly identifiable to San Andreas players, while the exaggerated reverb makes it usable even outside gameplay footage.