Place it at the reveal of an unidentified person in your edit, then follow it with the French Meme Song for a second French moment before cutting to the reaction shot.
Über diesen Sound
This is a short French phrase clip lasting just under seven seconds, built around the repeated word inconnu, with plus joining the two halves into one puzzling line. It lands as mysterious and slightly awkward, like a name nobody can place, and the repetition makes it stick in your head after it ends.