doubleKO said:

The fact is that George is a racist and sub-consciously injected his prejudices into Leia's character, which it is why it is ambigous. It is not a statement but a fuzzy reflection.

I think this discussion is interesting and has value, but I think this is a pretty heavy step to take based on what was meant to be a funny line in a rip-roaring adventure film.

I'm not sure that any insult-humor is automatically indicitive of the author being subconsiously racist. I'm also not sure that one character being rude to another (and I have no doubt it was supposed to show Leia was not a sweet lady) means the author is promoting an ideology.