When my twins were toddlers, they fought over me, literally. One time, my son, Dylan, was sitting on my lap and my daughter, Samantha, who was happily playing with a toy on the floor, hoisted herself up and pushed Dylan off my lap as though she was rescuing me from Bigfoot. She then triumphantly climbed on my lap; her toy long forgotten. After soothing a crying Dylan, I took advantage of the teaching moment and explained the concept of sharing.