Sarah Palin was what has to be called a “holy cow” story, to paraphrase Bob Woodward.
It was like "holy cow, if we're winning those seats we're going to have quite a night."
(Variations: cats or gee or mackerel or moley or Moses or schmuts shit or smoke or sox may replace cow) An exclamation of surprise, wonder, dismay, admiration, etc; Wow!: All he could manage to say upon seeing the nude blonde was ''holy cow!''/ Holy shit, the police/ And I think holy shit, this could be a Hitler/ Holy schmuts, that would be the pride and glory
[entry form 1940s+, cats 1900+, gee 1895+, mackerel 1903+, Moses 1900+, schmutz 1990s+, shit 1940s+, smoke 1889+, sox 1909+; euphemisms for holy Christ; moley is from comic-book character Captain Marvel]