LOL.
It's from the same musical you were quoting!
With a "little bit o' luck" this will all make sense.
Yep, it's all from "My Fair Lady" (based on Pygmalion by George Bernard Shaw).
But my favourite song from that show is this one:
And then there's the English spoken here in Australia, which is another kettle of kangaroos. I went to stay at a hotel in the Outback once - early morning, the manageress flung open the curtains, put down a mug of hot tea by my bedside, and said "Here y'are, cobber! And if ya don' like sugah, don' stirrit!"
Wouldn't that be loverly?
It would. And I wrote a parody of that song for people who hate housework. I called it "Wouldn't it be slovenly?"