Supercalifragilisticexpialidocious Richard and Robert Sherman, Disney, Mary Poppins

Um diddle diddle diddle um diddle ay
Um diddle diddle diddle um diddle ay

    Supercalifragilisticexpialidocious!
    Even though the sound of it is something quite atrocious
    If you say it loud enough you’ll always sound precocious
    Supercalifragilisticexpialidocious!

 
Um diddle diddle diddle um diddle ay
Um diddle diddle diddle um diddle ay
Because I was afraid to speak
When I was just a lad
My father gave me nose a tweak and told me I was bad
But then one day I learned a word that saved me aching nose
The biggest word I ever heard and this is how it goes:
  Chorus
 
Um diddle diddle diddle um diddle ay
Um diddle diddle diddle um diddle ay
So when the cat has got your tongue
There’s no need for dismay
Just summon up this word and then you’ve got a lot to say
But better use it carefully or it may change your life
One night I said it to me girl and now me girl’s my wife! 
  Chorus