Mai ru is Thai for I don't know, and repeating it several times is a common playful way of dodging a question or admitting defeat with humour rather than embarrassment. Online, short clips like this travel through memes, reaction videos and chat messages, where the language barrier matters less than the tone. The phrase is easy to imitate, easy to remember and instantly signals confusion, which is why creators keep reaching for it when a scene needs a quick, light-hearted shrug.