A: My brother smokes three packs a day. B: Three packs of what? A: Cigarettes, of course. B: How can he do that? A: When he is almost finished with one cigarette, he uses it to light another. B: He's a chain smoker. A: He's been a chain smoker for 30 years. B: That's unbelievable. Can he still breathe? A: He can, but the people around him can't. B: How can he still be alive? A: His doctor says his heart and lungs are strong and healthy. B: Maybe I should start smoking.
