The face you make when you get a really terrible present but don't want to hurt anybodies feelings.
I could tell martha hated the chess set i got her, you could see that present face from a mile away.
To "get back to someone" when you do not know the answer to the question someone has asked you.
person 1 "Global warming is a hoax"
person 2 "Do you have any proof?"
person 1 "I'm gonna pull a palin and get back to you on that one"