Why did Snape call Lily a 'Mudblood'?

[eggplant107]

No: HPFGUIDX 177878

"Carol" <justcarol67 at ...> wrote:

> he called her the worst name he 
> could think of and immediately regretted it. 

I agree and I think we can all relate to that; we can all recall
saying things we wish we had not. I think the reason it was Snape's
worst memory was not because of James's humiliation of him, it was
because when he said that word he lost Lilly's love. Note that in book
7 he refused to let anyone use that word in his presence.  

> the unreliable narrator at work again

I don't see why you say that. The narrator may be a bit too laconic
from time to time, but I can't remember him being downright deceitful.
JKR may be tricky but she plays fair. 
 
 Eggplant