How is “the bit” used?

In Fast X (2023), one line is: “I had panic attacks the whole bit”

Which movie is “the bit” from?

The clip at the top of this page is from Fast X (2023).

I had panic attacks the whole bit

8 作品で登場 · 1 本目

a particular part, moment, or aspect of something said, shown, or experienced

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a particular part, moment, or aspect of something said, shown, or experienced
The bit about the Isle of Man?

定義：Oxford Advanced Learner's Dictionary 第 9 版