Spell the word in mary poppins that they sing a song about, you know, the long one;)

Question: Spell the word in mary poppins that they sing a song about, you know, the long one;)
- Keywords:
  mary poppins,
  spell,
  supercalifragilisticexpialidocious
Asked by frloe to Mike, Pip, Tianfu, Tim, Tom on 26 Jun 2012.
- Tom Lister answered on 26 Jun 2012:
  
  supercalifragilisticexpialidocious.
- Philippa Bird answered on 26 Jun 2012:
  
  What Tom said.
- Tim Stephens answered on 26 Jun 2012:
  
  …

Question: Spell the word in mary poppins that they sing a song about, you know, the long one;)