Notes, Notings, and Common Refrains

I wonder if jekesta's friend's grandfather was confused by the music hall song:

Boiled beef and carrots,
Boiled beef and carrots,
That's the stuff for your "Derby Kell",
Makes you fit and keeps you well.
Don't live like vegetarians
On the stuff they give to parrots,
From Morn til' night, blow out your kite
On boiled beef and carrots.

(Translation: Derby Kelly = belly)