With no clear single source attached to the clip, Fan Tas Ti Co has spread mainly as a short shareable sound, passed between meme pages and short-form creators who reuse its chant-like rhythm for quick jokes. Its appeal is practical: it is short enough to fit into a transition, distinctive enough to be recognised on repeat listens, and neutral enough to work over almost any visual. That flexibility has kept it in circulation as a light, repeatable reaction sound rather than a clip tied to one scene or character.