The phrase identifies a specific type of dress-up attire suitable for young children during a particular holiday. It describes clothing that replicates the appearance of a large, semi-aquatic mammal, intended for babies and very young toddlers to wear on October 31st. An example would be a soft, plush outfit designed to resemble a hippopotamus, typically including a hood and foot coverings for comfort and safety.
Such apparel taps into the appeal of animal themes and the festive nature of the season. Parents often seek adorable and comfortable options for their children’s first or early Halloween experiences. These costumes frequently serve as memorable photo opportunities and contribute to the overall celebratory atmosphere. The selection of a specific animal underscores individual preferences and can reflect an interest in wildlife or a desire for a unique and charming aesthetic.