Me (putting items down on the counter): Hello.
Clerk: Do you have one of our super discount cards?
Me: I don’t, but that’s OK.
Clerk: You get one free drink every time you buy seven.
Me: No, but thank you.
Clerk: Are you sure?
Me: Yes, thank you.
Clerk: You’ll save 10 cents on every gallon of gas!
Me: I’d have to buy a car first.