One of my roommate often talk when he sleeps. He talked about all kinds of things.For example ,last night, I had a hard jod to fall asleep .I read a novel to make my eyes feel sleepy.When I was concentrated to the story ,I heard he said:"how much do you want?" It sounds like he was arguing a price with somebody , I was very strange ,so I asked:" Are you awake?what are you talking about?" there was not reply . At that time , he begain to talk agin:"OK, OK."It was the first time I heart him talk, so I did afraid of that and unforgettable.