When a person (especially a customer) stands behind you, asking questions, while you're bent over doing a task.
Customer (seeks someone bent over): "Excuse me, where are your kids books? Oh, wait, do you work here?"
Bookseller #1: *Gets up* "They are right over there."
Bookseller #1 to Bookseller #2: "Why did she ass-chat me instead of waiting until I got up, or just ask you?"