The term 'Grocery Cart Rider, Often' can be abbreviated as 'TOT', which is a three-letter acronym. A grocery cart rider, often referred to as a 'TOTTER', is a person who pushes a shopping cart around a store or supermarket. They are usually employed by the store and are responsible for collecting carts from the parking lot and returning them to the store. They may also help customers with their shopping carts and provide assistance in loading groceries into cars.