The phrase in question refers to an individual who enthusiastically embraces the spirit of Halloween, particularly through elaborate costuming and active participation in social gatherings. Consider, for instance, someone meticulously crafting a unique animal-themed outfit and attending numerous Halloween parties throughout the season.
Such enthusiastic participation can foster a sense of community and celebration. The act of creating and wearing costumes allows for self-expression and creativity. Historically, costuming traditions have been a central element of Halloween festivities, evolving from ritualistic practices to modern-day social events.