In the story "The Watson's go to Birmingham" the store that you are asking about is called Mitchell's. Mr. Mitchell allows families to charge their food at the store and pay when their earnings come in. Kenny does not want to charge the food because he believes that it means they are on the welfare list. When Kenny is finished gathering food items and gets ready to charge it, he whispers to Mr. Michel to put it on the welfare list. Mr. Mitchell is confused and asks him what he is talking about. When he realizes what the boy thinks he starts laughing and tells him it is not welfare bu rather that his father pays the bill all at once.