Back in the day (a couple of decades ago), I was working on a DOS-based application at my job, and one of the users pronounced the operating system like it was a measure of medicine or a Spanish two (DOSE instead of DOSS). Disk Operating System - the acronym is pronounced with a short 'o' (like in 'moss') unless you say 'operating' with a long 'o' like in 'go.'
I corrected him. He corrected me. I decided not to argue.
