Team Fortress 2 is a class-based shooter released by Valve in 2007, where the Engineer builds sentry guns to hold positions and the Spy counters him with disguises and a sapper that disables buildings. The line became a shorthand warning in matches and was repeated in forums, machinima and early gaming videos as players shared frustrating sapper moments. Its clear wording and frantic delivery made it easy to reuse outside matches, so it survived as a meme sound for sabotage long after the original game peaked.