Place it at the end of a failed-plan moment, after the mistake is shown, then follow it with the Bruh sound for disbelief and the Game Show Buzzer sound to mark the wrong move.
About this sound
This is a short meme clip lasting about 2.3 seconds, built around the phrase 'Didn't Follow Proto' and delivered as a quick spoken call-out. It feels dry, pointed and a little mocking, like catching someone out for skipping the agreed steps. The brevity keeps the jab sharp, making it easy to drop into a reply the moment a plan goes off script.