My grandmother always said, "there are more horses arses than there are horses," as you are evidently aware, and I think we may have discovered some, even though you have let me off the hook. Please tell no one else, you might just notice that bulge in my cheek was my tongue.
I am absolutely amazed how many people take the things said on this or any forum personally and I enjoy some of the absurd reactions. For the most part, no one knows anyone else from Adam, so who cares what someone else says about them or anything else. Good grief.
You asked a good question, "why would I purposely insult someone in bookstore?" Ask youself another, "why would someone who would purposely insult people in a bookstore tell about it?" Would they?
Hank