There is no widely documented source for this clip, so it is best understood as a short piece of online Taiwanese Mandarin speech shared for its sound and attitude rather than a line from a known show or film. Its appeal comes from how recognisable the phrase is in everyday conversation, where la softens a direct instruction into something playful. Online, short reaction clips like this travel easily because they need no context, and this one is mainly used to tease, warn, or interrupt in a lighthearted way.
About this sound
A short Taiwanese voice clip saying bu yao xi la, used as a funny reaction when someone keeps sipping or inhaling something they should leave alone.
This is a very short spoken clip, just over a second long, in which a voice delivers the Taiwanese Mandarin phrase bu yao xi la in a pleading, slightly exasperated tone. The delivery is quick and informal, with the final particle giving it a teasing, everyday feel rather than a serious warning. It lands like a nudge between friends, instantly signalling stop that, do not do that, or you have had enough. Because it is so brief and direct, it works as a punchline on its own, cutting through a scene and making a small, silly moment feel funnier without needing any explanation.