I don't know why Sen. Bernie Sanders agreed to appear on CNN with Rep. Michele Bachmann this week, but I'd like to know what was going through his head during all of those eye rolls like the one captured here, that he was too polite to say out loud on the air.

If someone wanted to take the time to do it, you could probably make a dozen of these .gifs from the segment on this Monday's The Situation Room. BuzzFeed's Dorsey Shaw did a fine job on this one.

Write your own caption below.