Trick or Treat 
> A little boy and girl go trick or treating. They knock on the door of
> this house and the man who answers it says, "Well, you two are awful
> cute. Who are you supposed to be?"
>
> "We're Jack and Jill." she replied.
>
> The man says, "You can't be Jack and Jill, you're black!"  So, they go
> off and a while later they come back dressed differently. They ring the
> door bell and once again the man answers. "Well now, that is just darn
> cute. Who are you this time?"
>
> "We're Hansel and Gretel." says the little boy.
>
> "Well, I hate to disappoint you son, but you can't be Hansel and Gretel
> because you're black."
>
> Heads hung low they leave. Not too much  later the man hears the bell
> ring again. This time when he opens the door, there stand the two
> children but this time they are BUCK NAKED. "Oh my! and just who are you
> supposed to be now?" he asks.
>
> "Chocolate M&M's, said the little girl.  "I'm plain. He's got nuts."

Very funny!  A bit tasteless and rascist, but funny nonetheless...