A couple of tales from the past - and it seems that not a lot has changed.
Rember Captain Norman Bristow - British Airways used him in their advertising back in the late 70s I think it was. He was known for calling ATC with "Sydney, Norman here".
On Departures when 'The Speedbird XXX' reported airborne but failed to readback the assigned level. When requested to readback the assigned level the response was "I'm too busy". What a - rhymes with spanker.