A: I want to take off my shirt. B: Why do you want to do that? A: My shoulders hurt from yesterday. B: What happened yesterday? A: I went to the beach. B: Are you sore from swimming? A: No, I didn't go swimming. B: Then what happened? A: I fell asleep without a shirt on. B: Then you must have bad sunburn! A: I do. My shirt makes it worse. B: It's too bad we're in school.