Wrong words, Stiles. He shouldn't let himself get riled up by a werewolf-sympathetic teenager. But Cooper's temper isn't something he has a good handle on at the best of times. Cooper doesn't say anything. He just stands up very slowly and it's like something has gone flat and dead behind his eyes. "You should be glad I gave up on feeding off of people that I know. Because if I hadn't, I'd do this--"

He grabs Stiles with one hand on the back of his neck in an iron grip, holding him there like a dog that's got a rat in its mouth. "--and drag you right off at the next stop, and there wouldn't be a damn thing you could do t'stop me." Indeed, there's not a single person even looking up to see what the two apparent teens are up to.