"Your face looks good." When Justin Ku first heard this remark from one of his relatives here, he took it as a compliment. He later discovered that the phrase is more often used by Koreans to point out when you've gained weight. "I was shocked by how casually they said it," said Ku, 34, who had emigrated to the US when he was young and moved back to Korea as an adult. Ku is not alone in his surpri...