She softened her words with a quick smile, before her mouth opened involuntarily.

His grip opened involuntarily and the sword spun from his hands.

The fist I snapped closed when she spoke opens involuntarily and the cortical stacks crushed inside it spill onto the floor.

He gave me a little shake and my eyes opened involuntarily.

Her neck stretched out, her beak opened involuntarily, and glorious liquid song poured forth.

Something struck his wrist, and his fingers opened involuntarily.

Her fingers involuntarily opened and the phone receiver fell to the thickly carpeted floor.

Her gaze followed theirs, and her mouth opened involuntarily.

The pressure increased steadily, hot flares of pain in shoulders, neck, elbows, wrists; his mouth opened involuntarily, and he gasped.

He involuntarily opened his eyes again to a mad, whirling scene.