Hey did you hear the one about the hat that was left on a train bound for 
the big city?  Seems this fellow left his hat on the train, and the hat 
went to the city.  Got picked up by a mysterious stranger.  Rode around 
on his head for weeks.  Got lots of strange and new ideas.  Then he got 
left on the subway, got picked up by a sweet hearted woman.  Rode around 
on her head, got a whole bunch of new ideas.  This pattern continued for 
years.

Then the hat's original owner came to the big city.  Found the hat in a 
used clothing shop.  It looked sad and worn out, just like the man.  So the 
man bought back his hat.  And put it on his head.  Fit perfectly.  

--------------------------------------------------------------------