Question: what is a buy 2 get 1 free?
Answer: It's BUY TWO" holds up two packets of needles "and GET ONE FREE" holds up third packet of needles. "What you've got there would be buy 1, get 1 free, which is not the sale we're running." ... It's the only sale during which a customer will tell you how many units they want to pay for instead of how many they want (WHY?