One of my colleagues in Britain keeps addressing me as "Armen boss" in mails and skype.
Hi, Armen boss. Can you please verify...?
I am in no conceivable way his boss and our relationship is restricted to occasional work-related correspondence. Does this form of address mean anything in British English or is it an idiosyncrasy I will have to either silently accept or get the courage to ask him about directly? As far as I know, he's a native speaker of British English.