A young woman in her mid-20s is shopping at the supermarket. She reaches the checkout, and the young man running the cash register begins ringing up her grocery items, which are as follows: One gallon of milk, one carton of orange juice, one loaf of bread, one frozen pizza, one can of beans, one roll of paper towels, one pack of cheese, and finally, one bottle of shampoo. The young, male cashier looks at her selected items, then smiles disarmingly at her and says, "Well, ma'am, it's obvious to me that you are a single, unattached young lady." She smiles, blushes a bit, and says, "Now, how did you figure that out?" He replies: "You're ugly."