(I am shelving a couple books. I have two books in my hands, each going in different sections.)

Customer: *pointing* “Oh that book goes over here and that book goes over there.”

Me: “But–”

Customer: “The book goes right here.”

Me: “Yes, I–”

Customer: *takes book from me* “The book goes in this spot here.”

Me: “I know.”

Customer: “I’m not trying to tell you how to do your job. I’m just trying to be helpful!”

Me: “Thank you?”