A disorder caused by someone who has had their eyes stuck so long on screen while playing Video Games that when they command their player to look in a direction the actually turn their own head and then feel completely ashamed.
Dude I was playin' Halo for so long that when I looked left I actually turned left. I felt really dumb.
that awkward moment when you see a cannibal eating someone alive, then they see you and turn their head with blood on their mouth right above the dead body, similar to the first zombie in resident evil. After this happens, they attempt to eat you too.
Johnny got high onbath salts again, a saw him killing and eating Eric, he then gave me the zombie headturn and went after me too.