Funny Racial Joke

There is a little black boy with his mum in a bakery.
The little boy pours a packet of white flour on himself, Turns to his mother and says
"Mummy, Mummy, look I'm a white boy"
The mother smacks the child across the face and says to him
"Go say that to you father see what he thinks"
So the two of them go to the boys father and the child says
"Daddy, Daddy look I'm a white boy"
The father smacks him across the face and says
"You rude little boy, what do you have you have to say for yourself?"
So the little boy says
"I've only been a white boy for 1 minute and I already hate you black people!!!"