So for a long time we've assumed that Stephen Colbert's long-promised trip to the Persian Gulf would involve a visit to Iraq to entertain the troops. He's been careful not to come out and say it, though, and only hinted heavily in March to Stars and Stripes that he'd be there. But today his cover was blown. By whom? Sarah Palin, of course! On her Twitter, no less. "Getting ready to tape shout-out for our awesome US troops serving overseas!" she tweeted. "Will be on 'Colbert Report' next month, broadcast from Iraq." Looks like this one wouldn't have kept the "undisclosed V.P. hideout location" secret any longer than Biden did. [Videogum]