Subway pusher Naeem Davis tells the Post in a jailhouse interview that he never meant to kill Ki Suk Han earlier this week, and blames the voices in his head (he says he’s bipolar), Han’s own aggression (he allegedly grabbed Davis’s arm and threatened to kill him), and marijuana for what happened. “I was under the influence [of marijuana],” he says. “It wasn’t my intention to kill him. I just wanted him to get away from me.” Like a Partnership for a Drug-Free America commercial come to life.