The phrase denotes a specific type of fancy dress, typically worn on October 31st, that combines elements of feline imagery with the concept of a short, light sleep. It often involves dressing as a cat and incorporating sleep-related accessories, such as a pillow or eye mask. An example would be an individual dressed in a cat costume, complete with whiskers and ears, while also carrying a small blanket or wearing pajamas over the costume.
The appeal of such an ensemble lies in its inherent playfulness and lightheartedness. It offers a creative twist on the traditional animal costume, adding a layer of ironic humor through the juxtaposition of activity (dressing up) and inactivity (napping). This particular approach to costuming can be particularly attractive for individuals seeking a comfortable and relatively low-effort option for Halloween festivities. Furthermore, it provides an opportunity for individual expression through the specific design and accessories chosen.