Re: Who to call "Sensei"?
I remember a story about Sam Walton the founder of Walmart. He had a mid level manager approach him one day and told him that she was asked to speak at a wonem's club about her experiience as a woman in businees and they wanted to know what her title was. Since she had no offical title she asked him how she should respond. He told her to call herself whatever she wanted to.
She responded to the women's club and told them her title was "Supreme Commander".