Oh, all right, but only if you pronounce it 'doff'. I can't see CFO ever being anything other than an abbreviation though. QED is an abbreviation of 'Quod Erat Demonstrandum' which is Latin for 'which is what was to be demonstrated' and should only be used properly at the conclusion of a mathematical proof, although a lot of people use it as 'therefore' these days.
Anyway, back to the footy