Just found this great blog: http://etherealmind.com/
I have always dodged when asked about what I do at work, but Greg Ferro put it in writing:
http://etherealmind.com/2008/03/17/normal-people-and-describing-your-job...
From the article:
My favourite is: I am computer plumber. If you think of every
computer as a toilet, then when you flush, the contents go somewhere.
Right ? So I am guy who makes all those connections between the
toilets, I just for computers.