Reading Too Much Into The Situation

(I work in the cafe part of a large bookstore chain.)

Customer: *walks up to the counter, looks around nervously*

Me: “Can I help you?”

Customer: “Yes…” *leans over counter slightly, whispers* “There are people reading books in here… Are they allowed to do that?”

Me: *attempts to avoid an are-you-stupid look, glances at manager, who is in the back room* “Uh, yes… They don’t have to purchase them to read them.”

Customer: “Oh, okay…” *gives me a weird look, walks away*