Team Fortress 2 is Valve's class based shooter released in 2007, where the Spy specialises in disguises, backstabs and sapping buildings. His French accented voice lines were widely ripped and shared on early soundboards and in machinima, then later in short form edits. The phrase survived because it sums up the class in four words. It is often grouped with other iconic shooter callouts like enemy spotted, and still appears whenever a clip needs an instant, recognisable reveal joke without any visual context.