The Spirit Halloween meme utilizes the distinctive packaging of Spirit Halloween's generic costumes, specifically the blank white space and the text "ADULT Size Costume - ONE SIZE FITS MOST." This meme originated from observations about the temporary nature and mass-produced costumes found in Spirit Halloween stores, gaining popularity for its satirical potential. Users create mock-ups by filling the blank area with humorous descriptions of social archetypes, personality traits, or relatable situations. It's used to comically highlight common experiences, societal trends, or ironic observations by framing them as a "costume" that many people metaphorically "wear" or embody. The meme's appeal lies in its ability to call out specific behaviors or situations in a universally recognizable format, often with a touch of self-awareness or shared amusement.