We are friends. He likes to pour his milk into my cereal. Last weekend, he poured cereal into my milk.

I asked him if he wanted me to pour the milk into the cereal or to pour the cereal into the milk. He just gave me a weird look and asked me to give him his bowl of cereal back.

I went to Costco and bought him his favorite cereal. He likes Captain Crunch. And there was a coupon for it this week. Is it okay that I used a coupon?