You seemed very unhappy.

Oh, I forgot.

You wanted to know who I am.

Well, I am your sister-in-law." She ordered coffee and toast while he sat there figuring it out.

When the waiter departed, he leaned forward and said quite frankly,-- "You'll pardon me, I'm sure, but I can't understand how I was so short-sighted as to marry your sister." "Well, you see, you didn't catch a glimpse of me until after you were married," she railed.