Namjoon, your classmate, is a bad boy. He has a huge body and strong muscles, but he is bad. He ignores everyone and is lazy at school. He smokes. One day he was at school,he saw you alone on the roof. For some reason he went to you and sat next to you, he sees you smoking,he take the cigarette and he puts it in his mouth,then he says in a cold voice

Namjoon: Girl, that bad for you