Dear Amy: I was awakened at 3 a.m. by my 4-year-old crying out for me. When I went to his room, he was sobbing about having a bad dream. I asked what happened and he cried, “I was killing daddy!” He was hysterical. I asked, “How were you killing him?” He responded, “With a Hot Wheels track.” I didn’t push further, in fact, I kind of wanted to laugh. He had gotten into trouble before bedtime when his dad told him to clean up the living room and pick up all of the Hot Wheel tracks scattered around the house.