How is “be miles away” used?

In Singin' in the Rain (1952), one line is: “Pierre is miles away, you witch.”

Which movie is “be miles away” from?

The clip at the top of this page is from Singin' in the Rain (1952).

to be a long way from a place, or to have gone far from where you were; for trouble, worry, or some other bad thing to be far off and no longer close

informal · Heard in 6 movies

Editorial67% of films
to be a long way from a place, or to have gone far from where you were
They'll be miles away by now.
Editorial33% of films
for trouble, worry, or some other bad thing to be far off and no longer close

Definitions from the Oxford Advanced Learner's Dictionary, 9th edition

Pierre is miles away, you witch.

Said in 8 films · #1