Funny Racial Joke

There was once a black boy, a jewish boy, and an Italian in 3rd grade. One day, they decided to play "who has the biggest dick". The Jew whipped it out, and then the Italian, and then the black. They looked at the black dick in astonishment, and told him it's huge because he's black.

That night at the dinner table, he told his parents "the other boys at school said that my dick is big because I'm black, is this true?" She replied, "no son, it's because you're 24".