He walked up to his mother, who was sitting on a bench watching him, tapped her on the arm and asked, “Who am I?”
His mother thought for a minute and replied, “I don’t know! Who are you?”
The little boy said excitedly, “Wow! My teacher was right. She said that I was so dirty that even my own mother wouldn’t recognize me”.
Image used under a Collective Commons License from https://www.flickr.com/photos/9396421@N02/17151895900