Place it after the moment everyone disappears, then follow it with Bruh or Oh My God Meme, keeping the disappearance as the centre of the edit and the reaction as the payoff.
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This 3.3-second French voice clip delivers the line 'mais ils sont où là', asking where everyone has gone. Its questioning delivery gives it a confused, slightly exasperated feeling, perfect for moments when a group suddenly disappears. It works as a quick reaction to an empty lobby, a silent chat, or friends leaving without warning.