Emphasis on proper address was: Snape as father figure

[potioncat]

No: HPFGUIDX 131039

Theotokos wrote:  
> I would also add that no one insists students call Hagrid by his 
new status of Professor.  He has been given the position and 
assumedly if all were equal would also warrant the Sir or Professor 
courtesy.  The emphasis on awarding Snape the courtesy and the lack 
of it for Hagrid has always interested me.
> 

Potioncat:
Early on Hagrid told Harry to call him Hagrid. That's up the adult, 
not to the child.

I don't think Lupin insists on being called "sir" either. I went back 
and read the Patronus lesson chapter. Harry never uses "sir" to 
Lupin. The one time he speaks directly, he uses "Professor Lupin" but 
all other questions, answers and comments are without any sort of 
special address.

I don't think we have any situations where Harry has referred 
to "McGonagall" or "Lupin" in front of anyone else to be or not to be 
corrected. Although IIRC, Percy once refers to "Dumbledore" in his 
home without correction.

Potioncat