A out-of-towner in New York at the height of the tourist season decided to revisit an uptown restaurant he'd enjoyed on a previous trip to the city. Finally catching the eye of an overworked waiter he said ""You know it's been over five years since I first came in here."" ""You'll have to wait your turn sir"" replied the harried and now irritated waiter ""I can only serve one table at a time.""