Abby is in first grade this year and she is losing teeth left and right. For the past two weeks, she's had one hanging by a thread, but hasn't managed to pull it out. The other night, Abby came quietly into our bedroom with palm outstretched and said with quiet excitement, "Look! My tooth came out!" It was 2:45am. "What happened?" we asked. "I don't know," she said sleepily, "but look, my tooth came out."