Prison Song is the opening track on System of a Down's 2001 album Toxicity, written about mass incarceration and United States drug policy. The band's abrupt stops, jagged riffs and shouted changes made their songs easy to slice into short clips, and this isolated chord circulated on soundboards and in edits as a standalone sting. Fans use it less as a full musical quote and more as shorthand for sudden metal chaos, which keeps it useful long after the album cycle.