Happened just now, and I was NOT in the shower...
My brain: Ooo! I have a great idea for a story. And look... And look... And this would be very clever...
Me: No new books. Must finish this one. Deadline.
My brain: But look!
Me. Okay. I'll look, but only for a minute.
Great plot twist rears its beautiful head like a jewel encrusted dragon.
I pet the dragon.
My brain: See?!
Me: Damnit! *pours more Pepsi to lure brain back into line*
What I really need is a brain babysitter. A cow-dog to keep my attention in line.
But no. I get dragons.
About the room...
There are a number of rooms in my head. Behind one, there is a gnarly table covered with thick open books. If I close those and tuck them away on the shelves, my thoughts become less cluttered. I can focus on whatever is left on the table.