Soccer mom: Can I have a medium iced latte? (pause) Wait, how much is a large?
Employee: $2.99.
Soccer mom: And how much is the medium?
Employee: $2.69.
Soccer mom: So which is the better value?
Employee: Huh?
Soccer mom: How many ounces are in the large? How many are in the medium? What’s the cost per ounce of each?
Next customer in line: Here’s thirty cents, just give her a large.
Soccer mom: I’m not sure if I want a large.
Rest of very long line: Argh!