The clip brings together two widely recognised references. Footloose is the 1984 film and its title song by Kenny Loggins, long associated with carefree dancing, while nani is the Japanese word for what, popularised online through anime reaction edits. Combined as a short soundboard clip, the pairing spread through meme videos and social edits where a confident setup needs an instant baffled payoff. It remains popular because both halves are immediately understood, even without context, and the clash works for dance, anime and everyday fail moments.