I work retail. People walk up to me like I'm a robot.
"Duck tape??" They just... Bark at me. I have gotten to the point that I refuse to tell them where something is until they treat me like a human being and ask a very simple question, "where's duck tape?"
Not what they asked for. Duck tape is a brand, and is in my department. Duct tape is in plumbing which also does HVAC products, and is actual foil tape with a peel off backing, actually used for ductwork.