WASHINGTON, D.C. - A stung U.S. Sen. Scott Brown lashed out at U.S. Rep. Patrick Kennedy today for insulting his landmark win by calling his candidacy “a joke.” Brown said Kennedy’s remarks are “mean spirited,” especially coming on the day he was celebrating being sworn into office. “I was elected and the votes are certified and I’m here to do my job. It’s unfortunate that he would use mean-spirited comments like that at a time when we’re just trying to solve the problems of the Commonwealth,” Brown said today on his first full day on the job.