An advertising jingle is a short, catchy tune or song used in commercials to promote a product or service. These jingles often include memorable lyrics that highlight the benefits or features of the item being advertised, making it easier for consumers to remember the brand. Jingles are designed to create a positive association with the product and can enhance brand recognition. They are commonly used in various media, including television, radio, and online platforms, and can be an effective marketing tool for companies like Coca-Cola and McDonald's.