The phrase comes from the automated voice used at self-checkout machines and payment kiosks, where customers are told to insert cash or choose a payment method before completing a purchase. On TikTok, that dry instruction was remixed into a short, catchy song, turning a routine errand into a joke format. Creators began pairing it with shopping trips, vending machines and checkout fails, and its appeal has lasted because almost everyone recognises the voice instantly, even without any visual context.