What Do You Do If...

What do you say to a boor who has just made a boorish remark?

"Let the comment hang there for an extra second or two. Acknowledge that you heard them, stick up for yourself in a civilized fashion, and move the conversation on."
— Margaret Shepherd, author of The Art of Civilized Conversation

"Nothing."
— Nora Ephron, author of I Feel Bad About My Neck