How is “how the other half lives” used?

In American Psycho II: All American Girl (2002), one line is: “My family's coming for my mom's birthday to see how the other half lives.”

Which movie is “how the other half lives” from?

The clip at the top of this page is from American Psycho II: All American Girl (2002).

My family's coming for my mom's birthday to see how the other half lives.

5 作品で登場 · 1 本目

the way of life of a different social group, especially one much richer than you

5 本の映画に登場

オックスフォード映画の 75%
the way of life of a different social group, especially one much richer than you
So this is how the other half lives. [SETH CHUCKLES] Come on. Amazing.
My family's coming for my mom's birthday to see how the other half lives.

定義：Oxford Advanced Learner's Dictionary 第 9 版