We Are Number One comes from LazyTown, the children's television series where Robbie Rotten, played by Stefan Karl Stefansson, sings it as a villainous anthem while plotting with his team. The catchy chorus and theatrical performance helped the song escape its original episode and become a major internet meme in 2016, when fans created countless remixes, covers and edits in support of Stefansson. Its upbeat, self-congratulatory tone made it perfect for celebration videos, and it remains a shorthand online for a plan working out exactly as intended.