A Chinese man walks into a bar, behind which is an elderly black man. After noising up the place, obviously drunk already and with cheap-looking girls surrounding him, he shouts to the barman, "yo buttercup, gimme a swigger!"
"What did you say?" the barman asks.
"I said gimme a beer, man!" Grudgingly the barman complies.
A few minutes later, the Chinese man yells again "hey buttercup, another swigger!"
"Right, that's it!" the barman yells. "We don't tolerate that kind of racist bullshit in here! How would you like it if I came in hurling abuse at you?"
"I wouldn't give a shit," says the chinaman.
The barman takes off his apron and hurls it at the Chinaman; "right then, we'll see about that. Get behind that bar."
The chinaman gets behind the bar as the bartender walks out the door. After handing out a few free drinks, he sees the bartender march triumphantly through the doors up to the bar.
"Hey chink, pour me a drink!"
"Sorry, we don't serve buttercups in here."