Bouge tes genoux circulates online as a short French meme audio, shared on soundboards in its elongated form bouge te genouxxxxx. The phrase itself is a plain dance instruction in French, and that simplicity helped it spread as a reusable cue rather than a full song. Creators lift the two-second shout on its own, dropping it over unrelated footage to turn any stiff movement into a joke. Its popularity comes from that instant recognition, even for viewers who do not speak French.