Sarcasm is an adjusted stress reaction.

Ug. Clara was not a governess getting her kicks pretending to be a barmaid! She was a barmaid trying to get a better life by becoming a governess and pretending to be upper class! I thought that was made pretty clear, eg the way she reverts to her lower class accent under stress.

I do tend to agree with the person expressing frustration with the way that Amy, River and Oswin are ALL sexy women who flirt with the Doctor: each character makes sense individually but it would be nice to have some variety. Still, she does make sense as an individual character. *has a forboding feeling that there will be just as much Oswin hate as Amy hate, yay*