The 'Girl of the Month' (Idarui Sonyeo) meme stems from the ambitious pre-debut project of the South Korean girl group LOONA, where a new member was introduced every month starting in 2016. This unique rollout created a massive lore-driven fandom known as Orbits, who famously propelled the phrase 'Stan LOONA' into a viral global phenomenon that dominated social media. Beyond the music, the meme usage often involves ironic humor, dramatic reactions from the members' variety show appearances, or complex references to the 'LOONAVERSE' lore. It serves as a tool for fans to showcase their favorite members or to humorously interject the group into unrelated online conversations, making it a staple of K-pop digital culture.