Joke of the day for July 2

Caller: ‘Can you give me the telephone number for Jack?’
Operator: ‘I’m sorry, sir, I don’t understand who you are talking about.’
Caller: ‘On page 1, section 5, of the user guide it clearly states that I need to unplug the fax machine from the AC wall socket and telephone Jack before cleaning. Now, can you give me the number for Jack?’
Operator: ‘I think it means the telephone plug on the wall.’

Source: Sent in by email