Joe was having trouble with his computer so he called Mark, the 11 year old next door whose bedroom looks like Mission Control, and asked him to come over.
Mark clicked a couple of buttons and solved the problem.
As he was walking away, Joe called after him, "So, what was wrong?"
He replied, "It was an ID ten T error."
Joe didn't want to appear stupid, but nonetheless inquired, "An ID ten T error, eh? What's that? In case I need to fix it again."
Mark grinned. "Haven't you ever heard of an ID ten T error before?"
"No," Joe replied.
"Write it down," Mark said, "and I think you'll figure it out."
Joe stated writing: I D 1 0 T
"Son of a bitch"
