We Are Number One

We Are Number One is a song made for the Lazytown episode Robbie's Dream Team, the second to last episode of the fourth season. (and of the show) In late 2016, it became popular due to the Noun Replacement videos being made from the song. It suppressed The Nutshack's theme song in terms of popularity.

Trivia

 * According to Stefan Karl, there is an eariler version of the song with different lyrics which hinted at a different version of the video.