In Posionwood Bible, what does Leah mean by:

Question

"Some people will send a bread-butter note after you have them over for dinner. Well, Anatole sent us a boy."

Answer 1

a "bread and butter note" is a THANK YOU note. "bread and butter" is a metaphor which means everyday ordinary, not special.... Sending a boy... would be extraordinary and very special.

Answer 2

A bread-and-butter note is a handwritten thank-you note.