Because it's scorching hot and I have no money, we decided to hang out at my place today. It's the first time my friend has come to my house, and as soon as he saw my mother, he said, "Your mother is beautiful and young, isn't she?" So when I mumbled, "Really? I think she's about 45..." he said, "Huh!? She's older than my mom!" While we were having such a pointless conversation, my mother came and told my friend to stay for dinner. And while I was out shopping for ingredients alone, my friend and my mother were left alone in the house...