Rao is the traditional Vietnamese practice of vendors calling out their goods in the street, and bánh mì is the country's famous baguette sandwich filled with meats, pâté and pickled vegetables. Recordings of these calls have circulated on Vietnamese social media and soundboards because the melodic, drawn out delivery is instantly recognisable at home and amusing abroad. Short clips like this one are reused in memes, travel edits and food content, where the call works as shorthand for a busy street, a morning market and fresh bread being sold.