Steeler's LB James Harrison body slams Cleveland Browns fan Slideshow:http://www.thepittsburghchannel.com/slideshow/sports/5662526/detail.html Excellent video here:http://kdka.com/video/?id=11977@kdka.dayport.com (flash player and video plays in browser window) CLEVELAND -- A Cleveland fan found out the hard way what his favorite team already knows: It's not a good idea to mess with a Pittsburgh linebacker. About six minutes into the fourth quarter of Saturday's Steelers-Browns game, the fan jumped a railing and sprinted onto the field at Cleveland Browns Stadium. With his pants falling down, the man jumped around, waved his hands in the air and moved toward Pittsburgh's bench -- until James Harrison snatched him from...