DEAR MISS MANNERS: When I was in college, a friend’s family graciously opened their home to me for a couple of months while I worked a summer job near their home, which was an hour from my family’s. I did my best to treat their home as respectfully as my parents’ home, and at the end of summer, I gave them what I could afford out of my earnings for their kindness. During one evening meal, I was enjoying some garden tomatoes that the lady of the house had provided.