Place it at the exact point a plan fails in your edit, after a Shocked Meme Sound for the setup, then follow it with a Goofy Yell to close the beat before the scene moves on.
Over dit geluid
This is a short spoken clip, just over a second long, of a single voice blurting out 'Ostie', the blunt Quebec French exclamation used when something goes wrong. It lands as a sudden, comic burst of frustration, sharp enough to punctuate a fail without needing any explanation, and it works best as a quick reaction rather than a longer line.