I was having trouble with my computer. So I called Harold the computer guy, to come over and helped me. Harold clicked a couple of buttons and solved the problem. He gave me a bill for a minimum service call.
As he was walking away, I called after him, "So, what was wrong?" He replied, "It was an ID ten T error." I hated to appear stupid, but I needed to know what was going on with the computer, so I inquired, "An, ummm- ID ten T error? What is that?... in case I need to fix it again?" The computer guy grinned.... "Haven't you ever heard of an ID ten T error before?"

"No," I replied.

"Write it down," he said, "you might be able to figure it out."

So I wrote out ...... I D 1 0 T error

I used to like Harold...