No Me Importa Nada is a well known song by Spanish singer Luz Casal, first released in 1989 and closely associated with her pop career in Spain. Its direct chorus helped make it one of her signature tracks, remembered for its defiant, carefree tone. Decades later short excerpts circulate online as a reaction sound, with the title phrase reused in edits, captions and memes to signal indifference in a humorous, musical way rather than a spoken insult.