[That is what he means, apparently, even though he doesn't say it. The boy changes his stance to eye Edward with a more curious look, dropping the immediate defensive posture.]

Nah, I ain't about to be killed by these zombies. They ain't that bright.

[He's actually just been lucky, but he's young and confident.]

Guess we oughta be clearin' them out, but I don't like to feed my enemies.