17 
3 
下載 MP3 
This clip circulates as a short viral audio rather than a line tied to a widely documented film, song or television moment, so its appeal comes from the phrase itself rather than a specific character. The wording is deliberately vague, which lets creators reuse it across unrelated videos without losing the meaning. On short-form platforms it is commonly paired with unexpected results, ironic outcomes and moments where the answer is left open. That flexibility has kept it in rotation as a reaction sound, especially when a creator wants uncertainty itself to be the joke.
關於此聲音
A viral voice clip of the phrase but who knows, delivered with a shrugging tone and used in memes to react to unpredictable twists and unanswered questions.
This eight-second clip captures a single spoken phrase, but who knows, delivered in a casual, slightly drawn-out tone that sounds half amused and half resigned. The voice rises and falls as if the speaker is giving up on finding an answer, which makes the line feel instantly relatable. It works because it does not argue a point or deliver a punchline directly; instead it leaves the outcome open and lets the viewer fill in the uncertainty. Played over a surprising result, a failed plan or a bizarre coincidence, it turns confusion into a joke and gives the audience permission to laugh at not knowing what happens next.
