The phrase in question refers to a specific type of fancy dress outfit designed to resemble the video game character Diddy Kong. These outfits are typically worn during Halloween celebrations or at themed costume parties. They often include a jumpsuit, hat, and sometimes a tail to fully represent the character’s appearance.
Such attire provides a readily recognizable and generally lighthearted option for individuals seeking a pre-made or easily assembled Halloween presentation. The popularity of the video game franchise associated with this character makes it a well-known and frequently requested costume choice. Its availability in various sizes and price ranges further contributes to its appeal.