I think the idea is to post a statment that has nothing to do with the previous statments Example:
Q – Does this shirt come in size 8?
A – Yes, its in the freezer section, aisle 2
Q – Can you deliver it after 3pm?
A – After 6? The chuppah is called for 5:30!
A – What do you mean, the flight’s delayed?!
Q – So what you’re saying is, the deal is on hold
A – No, not at all. But if you can, please buy milk.
That’s the idea.
But I’ll take it a step further. When the thread runs cold, I’ll collect all posts and try to “thread” them into a story. Total nonsense, obviouly, becuase the posts were completely non-related. Who knows? It just might make sense!