Black

 little boy is watching her mom bake a chocolate cake for him.  His mom sets down the chocolate frosting on the table.  The boy sits down and rubs the chocolate on his face.  He says," Look Mommy!!!  I'm black!!!"  His mother slaps him and says," Go show that to your father,"

He goes to his father and says,"Look Daddy!!!  I'm black!!!"  He slaps him and says," Show that to your grandfather young man. 

He goes to his grandfather and says," Look Grampa!!!  I'm black!!!"  He is slapped and commanded to go to his mother. 

The boy gets back and his mother asks," What did you learn?"

The boy says," I've only been black for 5 minutes and I hate white people."