I have this friend whose always talking about killing people but I've learned that he's all talk and doesn't have the balls to kill anyone and he tends to harm himself more then others. he tries to be bad ass but you know that's he's mostly talk. don't get me wrong he's cool but yea he would never kill anyone.

edit: only you know his true character so you need to determine if he just likes the idea or watching it or if he'd actually do something. (I feel like smokey bear)