The phrase represents a specific type of attire intended for the Halloween holiday. This costume is inspired by the popular children’s book character, The Very Hungry Caterpillar. It’s designed to resemble the caterpillar, often incorporating bright colors and segmented body construction.
This kind of themed attire offers a recognizable and often endearing visual. Its association with a well-loved children’s book adds a layer of nostalgic appeal. Furthermore, the character’s simple design allows for a range of interpretations, from basic homemade versions to more elaborate commercially produced outfits.