Apple Pay is Apple's contactless payment service for iPhone and Apple Watch, and its success chime is the short sound played when a payment is authorised. As contactless payment became part of everyday shopping, the sound moved into short videos, edits and memes, where it instantly signals a purchase without explanation. Creators use it as audio shorthand for spending, treating the familiar ding as a punchline in itself. Its continued use comes from instant recognition: viewers hear it in shops every day, so it needs no context to land in a joke about money.