"When I had my wisdom teeth pulled out," family friend Joseph Pignatore was saying, "my brother-in-law said, 'We should take a ride to White Castle.' I basically gummed the burger while soda was dribbling down my mouth." Yesterday, Pignatore, all teeth in place, could enjoy his sack of Slyders in peace at the White Castle on Stelton Road in South Plainfield. The Hillsborough resident, along with his wife, Joanne, and son, Matthew, were among thousands of people nationwide who enjoyed Valentine's Day, White Castle style. Participating White Castles, including six of the 24 in New Jersey, invited couples to a...