By C.W. Sesno, SI.com
For a guy who can be so, how to put this, "animated" in press conferences, Andy Roddick is pretty reserved in answering your Twitter questions. He's got something of a "Most Interesting Man in the World" thing going in this video, where he answers questions on his Mohawk, his wife, Brooklyn Decker, and Tour pranks. If nothing else, "very carefully" is some darn good advice.