Guizers are individuals who dress up in costumes, often for celebrations or festivals. This practice is especially popular during events like Halloween or Carnival, where people transform into various characters, from spooky creatures to beloved fictional figures. The term is commonly used in certain regions, particularly in Scotland and Ireland, where dressing up is a traditional part of local festivities. The act of guizing often involves not just wearing costumes but also performing or entertaining. Participants may go door-to-door, showcasing their outfits and sometimes reciting poems or songs in exchange for treats or small gifts. This tradition fosters community spirit and adds excitement to celebrations.