‘Lipstick on a pig’ suddenly sexist remark?

“I think they put some lipstick on a pig, but it’s still a pig.” — John McCain last year, talking about Hillary Clinton’s health care plan.
“You can put lipstick on a pig. It’s still a pig.” — Barack Obama on Tuesday, criticizing McCain’s stated commitment to change.
“Sen. Obama uttered what I can only describe to be disgusting comments, comparing our vice presidential nominee, Sarah Palin, to a pig.” — Former Massachusetts Gov. Jane Swift, who is leading the McCain camp’s new “Palin Truth Squad” (Palin joked last week that the only difference between a hockey mom and a pit bull is lipstick).