(AP) - The Republican in New Jersey's race forgovernor wants the incumbent to weigh in more candidly about thechallenger's heft. Chris Christie says Democratic Gov. Jon Corzine should quithinting at his weight with unflattering ads and "Man up and sayI'm fat." Christie also told radio personality Don Imus he'll be "a big,fat winner" on Election Day. "I'm pretty fat," Christie deadpanned on Imus's New York-basedradio show Thursday morning. Asked by Imus, he joked he weighed 550pounds. Christie won't say what he weighs but says he's helped keepDunkin' Donuts employees working during the recession. His weight became an issue in September when Corzine launched anad accusing the former federal prosecutor of "throwing his weightaround" to get out of traffic tickets.