An American tourist was lunching in a restaurant in China where the specialty was duck. The waiter explained each dish as he brought it to the table. "This is the breast of the duck; this the leg of the duck; this is the wing of the duck; etc." Then came the dish that the American knew was chicken. He waited for the explanation. Silence. "Well?" he finally asked, "What's this?" The waiter replied, "It's a friend of duck."