The exact original video behind this clip is not widely documented, but the phrase itself comes from everyday Singlish and Malaysian street slang, where walao expresses shock and the following words add a crude, comic emphasis. Shared as a short reaction sound, it spread through meme pages and short-form videos because listeners in Malaysia and Singapore instantly recognised the tone. It remains popular as a quick, loud way to react to something absurd, unfair or unexpectedly funny.