The 'Yo Soy Luigi' meme originates from a Friday Night Funkin' (FNF) mod titled 'Twiddlefinger,' which features a distorted, creepypasta version of Luigi singing a bizarre Spanish song. The lyrics 'Yo soy Luigi, Mama Mia' became an instant viral sensation on TikTok and YouTube, often paired with surreal visuals or 'brainrot' content. The meme blends nostalgic Mario imagery with unsettling, uncanny valley horror, making it a favorite for those who enjoy the 'weird side' of the internet. It is widely used to express irony, confusion, or to participate in the ongoing trend of gaming-related creepypasta parodies.