A young boy from an all-white family was playing in the mud. After rolling around, he realized he was covered in it. He went inside and told his mother, "Look, Mom, I'm black."
"Come here," she said. When he approached, she whooped him. "Go tell your father what you did," she instructed.
The boy went to his father and said, "Look, Dad, I'm black."
"Come here," his father said, and then he also started to whoop him. "Go tell your grandmother what you did."
The grandmother did the same thing.
Finally, the boy returned to his mother. She asked him, "What have you learned today?"
The boy replied, "I've been black for five minutes, and I already hate you white bastards!!!"