The narrator is in a bad mood. He feels like he's abusing his brain against his will. He's not sad, he says, and he doesn't want to be a sadist. But he does want to know what's wrong with him. He asks the cashier to open the bag and pull out the things inside. He wants to exchange them for something else, but the cashier won't let him do it. The narrator tries to get the girl to stop, but she's too late. She's wearing a bra, and the narrator says that's fine. The girl is wearing her panties, and she says that men will notice her. He says that he knows this, but he can't go and exchange the panties by himself, because the girl has an umbrella. But the girl says that she loves him, and that she wants to be his girl friend.