Place it at the end of a failed push or a last-second rescue, after a teammate callout, then follow it with Enemy Spotted to restart the action or Bomb Has Been Planted to raise the stakes before the next play.
Über diesen Sound
This short clip runs just under four seconds and features the Spy from Team Fortress 2 repeating his call for a Medic three times before breaking into a loud, manic laugh. It feels desperate and funny at once, like a plea that turns into gloating, and it works because the shift from panic to triumph is so sudden. The line comes from Team Fortress 2.