His head snapped as if she'd hit him across the face.

The response came so quickly that his head snapped around and he began to run.

He never felt the impact, but his head snapped to one side from it.

I stood quickly, and his head snapped in my direction.

He saw their heads snap around, then up at him.

Her head snapped round just in time to see a man fall.

His head snapped in her direction for a second time.

The high cry from behind them made Mark's head snap around.

Her head snapped back, but this time she couldn't drop to the floor.

His head snapped back, and he almost lost consciousness again.