A Chinese man enters a bar to find a Black bartender. He says, "Hey nigger, give me a jigger."
The Bartender responds, "That's terrible! How would you like it if I said something like that to you? In fact, let's just switch places. You get behind the bar and I'll come in as a customer."
The Chinese man agrees and gets behind the bar. The Black man goes outside.
Upon reentering, he says, "Hey Chink, give me a drink."
To which the Chinese man answers, "Sorry, we don't serve niggers here."