I've just found my LegoLand Driving Licence from when i was about 10. I have never done it since, so surely i must be a LegoLand Formula 1 driver by profession.
My OPs manager hasnt controlled aircraft in years... she doesnt call herself an ATCO, she calls herself a manager.
I think you are clutching at straws with this one BD. But if it helps you sleep at night, you keep calling yourself an ATCO. Just dont do it too loudly when there are real ATCO's in earshot eh?