The Golden Rule: Selectively Applied

The other day, Joe was wearing a long-sleeved shirt. He was constantly tucking his arms away out of the sleeves and slapping his sister with the empty flaps. Kaity had enough and administered her own brand of justice in the situation. When he came to Jeff and me to tattle, we both laughed and told him he got what he deserved. Then I grabbed the camera:

The rest of the story is that the next day, Kaity had on a long-sleeved shirt and began slapping her brother with the sleeves! Joe immediately turned on her and announced, "Hey! Do unto others as you would have them do to you!"