[farrisbris]

Can't remember either, but your recollection is close to what mine is.

But given that Moff knows who/what Darth Vader is it is not supprising that he takes a subservient stance when talking to him. Kind of the same way i'm very careful around american cops. I would never address a norwegian cop by sir, but i don't even think twice before using sir/mam when talking to a us cop.

But in these cases its fear. It has nothing to do with pleasentries. It's the gun in the holster or the knowledge that he can forcechoke you if he wants to. ( at least thats my interpretation of that encounter in rotj ).

So no. I don't think they would say that in any normal encounter. I know i wouldn't other than in jest.

[Bartweiss]

This makes sense - I'd assume "I know my place, don't hurt me" is a sentiment that arises in basically any culture as long as somebody involved has lots of power and no accountability.