Place this clip right after the unanswered question in your edit, then follow it with a huh reaction if the confusion continues, or cut straight to the next attempt for a cleaner, quicker comedic beat without extra reaction sounds layered underneath.
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This is a 6-second voice clip of Tintin saying 'je ne sais pas' in French, which means 'I don't know,' delivered as a plain, a bit sheepish admission. It feels funny and awkward in a light way, like shrugging off a question you cannot answer. The phrase belongs to Tintin, the young reporter from the Belgian comic series.