it's a long story(redirected from it is a long story)
it's a long story
The story is very long and convoluted (and perhaps too long to tell the whole thing). A: "So how did you and Jim meet?" B: "It's a long story, but the short version is that we met in college." A: "Why were you running across the courtyard in your underwear yesterday?" B: "Ugh, it's a long story. I'll tell you tomorrow."