Emma and Nathan were playing together when Nathan bit Emma. This is not as uncommon as I would like. Because biting is dangerous, Nathan got the requisite 3 spankings and a time-out. When we asked Emma what happened she said, "We were playing a game and I was the veterinarian and Nathan was a sheep. I told him to open so I could check inside his mouth. Then he bit me!"
What do you know? He was just being a sheep.