In article , Huge wrote:

Thanks for reminding me that I've previously had to taxi a support person
halfway across London to plug in a keyboard extension cable for someone.

I've heard of someone flown to Singapore to look at a problem after a
phone call which went roughly "You're sure it's plugged in?" "You're
really sure it's plugged in?" "You're really absolutely certain it's
plugged in?".

Turned out it was plugged in, to a four-way extension lead which was also
plugged in - to itself.