He stood perfectly still, his black glass eyes watching me.

Not only that, but he was standing perfectly on two legs.

She stood perfectly still for a moment looking straight into my eyes.

All three stood perfectly still on the outside of the door.

She stood perfectly still in front of him and kept her gaze on the floor at his feet.

"He is standing perfectly still, in the middle of a room."

She was standing perfectly still at the mouth of the elevator.

He had been standing perfectly still while trying to concentrate on a way out.

She stood perfectly still, only her eyes searching for the child.

If she stood perfectly still, maybe the person would pass by without seeing her.