I had a problem yesterday, so I called Eric, the 11 year old next door, whose bedroom looks like Mission Control and asked him to come over.

Eric clicked a couple of buttons and solved the problem.

As he was walking away, I called after him, 'So, what was wrong ?

He replied, 'It was an ID ten T error.'

I didn't want to appear stupid, but nonetheless enquired,

'An, ID ten T error ? What's that? In case I need to fix it again.'

Eric grinned .... 'Haven't you ever heard of an ID ten T error before ?

'No,' I replied.

'Write it down,' he said, 'and I think you'll figure it out.'

So I wrote down:

ID10T

I used to like Eric, the smart arsed little bastard.