Antonio Pierce joined an exclusive, but growing club on Thursday night: Giants who have been ripped by Tiki Barber. Pierce became the latest target of the ex-running back-turned-media star when Barber took shots at the Giants' linebacker for his odd behavior toward the media this week following the Giants' 35-13 loss to the Packers on Sunday. At first, Pierce refused to speak to the press for four days, a partial violation of the NFL's new media policy. Then, when Pierce finally broke his silence on Thursday, he blew an air horn any time a reporter tried to ask him a question about a Giants defense that has given up 80 points in its first two games. Barber called that behavior "completely disrespectful" on his radio show Thursday night. Then yesterday, former NFL tight end Shannon Sharpe concurred, calling Pierce's actions "childish."