The phrase identifies a specific type of seasonal decor available at a major retail chain: an inflatable depicting the character Jack Skellington from the film The Nightmare Before Christmas sold at Walmart. This product is typically marketed during the Halloween season.
The availability of such a product reflects consumer demand for recognizable pop culture icons during holidays. Its presence at a large retailer like Walmart indicates broad market appeal and contributes to the seasonal sales figures for both the retailer and the licensing company associated with the character. These inflatables have become a common sight in residential areas during October, adding to the festive atmosphere.