Two kind of secretary

I NEVER knew there are two kind of secretary until my boss share his experience to my Australian PM. I was working at the PHIH project at that time and one day boss came to site for regular meeting and I needed to attend as a QS. The project is Myanmar's first ever private hospital project and try to comply international standard. So my employer needed to hire some foreign technician to manage it and also major M&E sub-contractor was a Singapore based company. After meeting, boss asked PMs as follow:

boss: what kind of secretary is yours?
PM: ahh, what do you mean, I don't get what you mean?
boss: alright, do you know how many kind of secretary in this world?
PM: I simply know only one kind, (he answer by laughing)
boss: imm I read in a book about that and it was really hilarious despite realistic
PM: how does it mention?
boss: according to them, there are two kind of secretary in office life
PM: really? what are they and how they work?
boss: They are called "grand secretary" and "great secretary".
PM: how do they differ?
boss: Grand secretary will greet you "Good morning, Sir"
PM: yes it seems normal to my secretary..:)
boss: Great secretary will greet you "It's morning, Sir"

PM and the rest were laughing upon our boss's explanation regarding two kind of secretary. I see it funny but realistic and hope you will also find it funny and take a note.

Have a nice day!!!