Who

Uncle Ernie:
I'm your wicked Uncle Ernie
I'm glad you won't see or hear me
As I fiddle about
Fiddle about
Fiddle about !
Your mother left me here to mind you
Now I'm doing what I want to
Fiddling about
Fiddling about
Fiddle about!
Down with the bedclothes
Up with the nightshirt!
Fiddle about
Fiddle about
Fiddle about !
You won't shout as I fiddle about
Fiddle about
Fiddle about
Fiddle about !
Fiddle, fiddle, fiddle.