Dear Boston Celtics, are you kidding us? Here is what the official Twitter account of Joe Arpaio tweeted out yesterday: I appreciate the many letters regarding my Birthday, especially the letter from the Boston Celtics. twitter.com/RealSheriffJoe… — Joe Arpaio (@RealSheriffJoe) June 18, 2012 A birthday letter? A flipping birthday letter? Does anyone your PR department […]