Kirk's mouth twitched slightly, as if he thought so, too.
The Sam's thin mouth twitched slightly as he moved into the room.
The hand twitched slightly, nearly losing the bottle; then it was still.
Eileen's face twitched slightly as if she felt a small, sharp pain.
In the window to our left, as we passed, the curtain twitched slightly, then fell back into place.
The corner of her mouth twitched slightly; she reached over to touch his hand.
Even the best West player, able to win the third trick, would have twitched slightly before playing low.
As she passed over it, the corpse was slightly twitching.
Harry lay twitching slightly on the bed, too exhausted to open his eyes.
She was warm and twitching slightly in his arms.