Place it at the end of a fail sequence, after the mistake is shown and the reaction has sunk in. Start with the Wrong Answer Game Show sound for the failed attempt, then follow with this clip as the verdict, and finish with Nelson's Ha-Ha to extend the joke.
About this sound
This is a short Portuguese voice clip of a man saying 'Se fudeu!' in a blunt, emphatic tone, lasting just over a second. It lands as a mocking, no-sympathy reaction, the kind of line that makes a failure feel final and a little funny. The delivery is direct and punchy, with no build-up, so it works best as an instant verdict on someone else's bad luck.