After spilling spaghetti sauce on a favorite white sweater, I took it to Mr. Wong's laundry. Mr. Wong said, "Come back Thursday," which I did. Mr. Wong apologized profusely, explaining that this stain was beyond even his powers to expunge. "But I'll send it to my brother, who has been in the laundry business even longer than I. I'm sure he can remove this extraordinary stain. Come back Tuesday." I did. But even Mr. Wong's brother couldn't remove this stain. I guess it's true: two Wongs can't make a white!