The other day at work my boss was preparing a talk for an important muckety-muck. He wanted to use a graph that had been prepared by somebody who has since left our organization. Unfortunately, the graph needed to be updated, so my boss was trying to do it by hand. This, as one might imagine, was causing a number of problems. I volunteered that I had the program that our now departed colleague had used to generate the graph, and I could update the program to produce a new graph.
Since no good deed goes unpunished, I was asked to make a number of other changes. "Can you make this line thicker?" Then, my boss complained that since the graph was color, it was coming out as gray on the black-and-white printer. "Fine," I said, "I'll change 'blue' and 'red' to 'black' everywhere." So I did a search-and-replace. (Fans of vi will recognize the %s/red/black/g command.)
I sent off the new version of the graph to him, and he finally seemed satisified. About an hour later, I got a call from him asking why the work "squablack" was on the graph.