It's what someone says when another person asks a question the other person doesn't want to explain; whether or not the explanation is long or not.
Morgan: Why do you only eat in even numbers?
Sparki: Long Story, dude.
by Sparki16755 August 7, 2008
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What someone says before starting a long story to warn people if they're disinterested
Graham: Oh, it's a long story.
Juan: I don't need to hear it.
Graham: Okay, understandable.
by MarcoRubio2016 October 8, 2018
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A way of saying "I don't want to tell you"
From 'The Fast and The Furious'

'so how d'you know him?'
'It's a long story'
'We've got a 40 mile hike.'
'A business deal went sour,And once I made the mistake of sleeping with his sister'.
by Jay & Silent Bob June 24, 2004
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Something said by some one when they don't actually want to tell you what happened.
Person #1 - So where were you yesterday?!

Person #2 - It's a Long Story...
by me218 August 1, 2008
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When you had ATTEMPTED to tell a short version of a story but you end up telling the entire story anyway. Or if you have gone far off of the original point, and want to summize the statement. Started in Virginia Beach, by Reitzel.
by MaddWopp February 5, 2022
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Said when they ask you something you don't have time to explain
Hey, aren't you at school?

Not today. It's a long story.
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Taking a long story and summarizing its main points, skipping over unnecessary details
I wanted to tell you all about my amazing day , but long story short, I totaled your car!!
by .PiCe.NuSSy. September 10, 2008
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