What is That's So Palin?
1.
Used to refer to something someone has done or said that is so fucking stupid, American VP candidate, Sarah Palin herself would be jealous.
Or,
Simply used as a referent for something pretty on the outside, but completely devoid of the rational faculties on the inside.
-That's so
Bryce:
"...and so I nearly ran over the fucking kid in broad daylight because I was beating off and texting while driving, without my prescription lenses on.
Carl:
"Dude... That's so Palin!"
See