lip stick on a pig?

[The Ghost of RubangB]

Timmah! said:

The Ghost of RubangB said:
"Keep in mind that technically, had I meant it this way, she would be the lipstick," Obama added, referring to GOP vice presidential nominee Sarah Palin. "The policies of John McCain would be the pig."

Maybe when he finds himself in a hole, he should stop digging.

I should have clarified, this was from Obama on Letterman, joking about it.  Obama said it's a common expression in Illinois, but he doesn't know what they put lipstick on in New York.  Then he said that zinger I quoted earlier.