This refers to the character being depicted in the iconic Hooters uniform . This has been a popular trend for fan art commissions, such as the widely known "Hooters Lucina" series.
This is likely a nickname for a specific character or a persona (possibly a "Grinch-themed" original character or a specific fandom character like Grima or a "Grinchie" Frenchie). Hooters W! Grinchie
Authentic uniforms for reference or costumes are often found on resale sites like Poshmark . This refers to the character being depicted in