What is It's A Long Story?
1.
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'.
2.
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.
See
3.
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...
See