More on the Pig comment: Is any insult to a woman automatically sexist?

Instapundit did a poll asking whether the Lipstick remark was "a deliberate sexist smear" or "an inadvertent gaffe."

Can I think that Obama was referring to Palin as the pig (the referrence to the old fish later certainly appears to be McCain, after all), without thinking that it's sexist? Does "pig" have a special function as a sexist remark?

If we believe that it was to refer to Palin (and he's not just an idiot for not thinking of the obvious connection with the word lipstick), then I'm going to go with it was just a plain, stupid, insult. That doesn't make it any better in my book- it's juvenile and crude, but not neccessarily sexist.