Usually, city rivalries related to sporting match-ups involve wacky wagers from politicians. The mayor of City X wants 100 pounds of cheese from the governor of City Y if City X wins the Super Bowl. But for the 2013 Stanley Cup between the Boston Bruins and the Chicago Blackhawks, the wacky wagers are getting social and, well, smack-talky. The folks over at Arnold Boston and Leo Burnett in Chicago are using the Stanley Cup to launch their own trash-talking competition for charity: The Smackley Cup. Agency employees and random fans from all over are encouraged to tweet using #smacktalkboston or #smacktalkchicago. Once the series concludes, the agency supporting the loser of the Stanley Cup will have to donate 10 cents per tweet and retweet to a charity AND wear the opposing team’s sweater in the office the following day. That sort of masochism always makes for fun water cooler talk.