It had been in the back of my mind for a while now. I had to call an old Japanese friend to thank her for a gift she sent me recently. The problem was, I couldn't remember her phone number.
So yesterday, I finally decided to look for it. It was very dark in the back of my mind, and I had stacks of more immediate concerns piled near the frontal cortex. But I pushed all those things aside. I had to get this done.
The mind is a big, big place. I had forgotten how far back the back of my mind really is. From the gray matter in front, I must have walked a couple kilometers. It got darker and darker the further back I got. And smelly! The mind can be very unclean at times. Some memories had definitely soured.