Food curatorial choices / Huge shopping carts don't belong in small bathrooms

At the grocery store a woman brought her shopping cart into the cramped bathroom. I don't know how she managed to get it in there. Why not leave it outside? She hadn't paid for her groceries yet. Are you guarding your food curatorial choices? Do you think someone is going to say, "Milk, bread, and eggs ... never thought of that. I'm taking this one! Quick before she washes her hands!"? I wonder if there's something to the psychology of anticipated ownership.