How is “turn the knife” used?

In Silver Linings Playbook (2012), one line is: “You're twisting the knife now. You get off on it!”

Which movie is “turn the knife” from?

The clip at the top of this page is from Silver Linings Playbook (2012).

You're twisting the knife now. You get off on it!

3 作品で登場 · 1 本目

to say or do sth unkind deliberately; to make sb who is unhappy feel even more unhappy

2 本の映画に登場

オックスフォード映画の 100%
to say or do sth unkind deliberately; to make sb who is unhappy feel even more unhappy
you shared a love of twisting the knife into one another.
You and Harlan were drama mamas, you shared a love of twisting the knife into one another.

定義：Oxford Advanced Learner's Dictionary 第 9 版