I think a lot of this stems from women's inability to summarize.
I could tell my wife, "I stopped and bought milk." But if she were telling me, she would describe the entire journey step-by-step, including how hard it was to park, who she saw at the store, and a re-enactment of any and all conversations she had while there!
She would do this even if I started the conversation by asking, "Did you get milk?" and all she had to say was, "Yes."
Sometimes she gets so wrapped up in the telling of the story she seems to lose all track of where it's supposed to wind up. There's no obvious arc to it, no sense that it's heading to a conclusion, and I have to interrupt her. I don't like doing it, but at some point I feel I have no choice.
And don't ever ask about a movie. Reading the script would take less time.