(A customer asks me where the bags of potatoes are located, so I show him.)
Customer: “Ah, here they are.”
Me: *gets him a bag* “Here you are.”
Customer: “Is that price right? Buy-one-get-one?”
Me: “Yes. It rings up at half-price.”
Customer: “But it’s buy-one-get-one, right?”
Me: “Yes, it is.”
Customer: “So I can get two for the price of one?”
Me: *confused pause* “Would you like another bag?”
Customer: “Wouldn’t you?”
Me: “Um…” *gets him a second bag*
Customer: “Who wouldn’t want two bags of potatoes?”
Me: “Well, if a customer had a smaller family, they might only want one bag at half-off…”
Customer: “If it’s buy-one-get-one, you should get two!”
(The customer left to get something else on sale. I didn’t dare tell him that I personally don’t like potatoes at all, so I wouldn’t even buy one bag.)