"Twin-tuition" can happen mentally or psychically, and such was the case with identical 7-year-old twin sisters Ally and Kayli from Seven Falls, Pa. The sisters were playing at a mall playground when Kayli got hit in the face and developed a black eye. Ally, who was playing on another side of the playground and was uninjured, started to show signs of bruising in the exact same place. (Handout)