"long story"의 정의 및 의미

What is the origin of the idiom "long story" and when to use it?

The idiom "long story" is an informal expression that has evolved over time to indicate a complex or time-consuming narrative. Its origin lies in the tendency of individuals to preface or follow up a detailed account with the phrase "long story" to warn listeners that the explanation may take a considerable amount of time. This idiom is a colloquial way of signaling that there is more information than can be conveniently conveyed in a brief or succinct manner.