Would you eat McNuggets made from this?"It's time to start calling a chicken a chicken," San Francisco attorney Steve Baughman says of his latest Web endeavor. The chicken in question, it so happens, could probably feed many of the homeless encamped in Golden Gate Park -- that is, if you could ever get it to stop talking.Baughman has launched a new Web site devoted to skewering Rush Limbaugh, the reigning monarch of conservative talk radio. The site, www.rushisachicken.com, urges Limbaugh to ste