The clip comes from Team Fortress 2, the Valve team shooter first released in 2007, where the Spy is the disguise and backstab class built for sneaking behind enemy lines. Its Capture the Flag matches are called Capture the Intelligence, with each team defending a briefcase that opponents try to steal and return to base. Short class and objective sounds from the game spread widely through machinima, frag videos and meme edits, and this brief death sting remains popular because it instantly signals a stealth plan collapsing.