Afni circulates as a user-shared meme sound rather than a clip with a widely documented origin, and that ambiguity is part of how soundboard culture works: short titles travel, get reused and pick up meaning from the edits around them. At sixteen seconds, the clip fits the rhythm of short-form video, where a single recognisable sound can carry a joke without extra explanation. It continues to appear in reaction edits and compilations because it is easy to drop in, easy to recognise on repeat listens, and flexible enough for fails, surprises and everyday awkward moments.