Place it right after the losing moment in a match edit, not during the build-up. Lead in with Enemy Spotted when the target is first called out, play this taunt as the payoff, then follow with a French meme song sting to close the sequence.
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It is a 1.3-second French voice clip delivering the line 'Roi des perdants, nous te saluons' in a stiff, formal salute. The feeling is sarcastic and mocking, like bowing to someone while calling them king of the losers. It comes from taunt 08 in the French version of Age of Empires II.