Agreed! Many years ago, I was working at a busy light aircraft field and used "Break, break" in a transmission. The first aircraft addressed screeched to a halt just short of an (inactive) cross runway. It took me a few seconds to realise that he had taken it as "Brake, brake!". I've never used it since!
So what exactly does "break, break" even mean? I understand a single "break" between instructions to different aircraft, but what does the double break at the beginning of a transmission even mean?