It is more difficult, thusly, for them to turn and fire over their right shoulder.

I wouldn't have believed he could even turn his head, much less look over his shoulder.

Trap couldn't stop himself but he could turn his head and look over his shoulder.

She turned and glanced over her shoulder when she heard the door open.

The fat cook turned a shiny black face over his white shoulder.

So he doesn't turn to glance over his shoulder, to see who's just come in.

Then he turned his head to glare at me over his shoulder.

Chris would have to turn and look over his shoulder to see the doctor.

Same pose, only just turn your head over your shoulder.

Even as he did so the woman turned an abrupt white face over her shoulder and almost fell.