Louis Tanzer is still armed with that sharp wit and zany sense of humor that’s kept him ticking all these years.  Tanzer was showing off his comedic chops on Dec. 26 during a special celebration . Having turned 105 years of age on Christmas Day, the Beverly, Massachusetts, resident is believed to be the nation’s oldest-living Marine.  The World War II veteran was surrounded by family, friends, first responders, local politicians, reporters and state officials, including a representative from