Martial Arts?

I was standing at the bar of Terminal 3 in the International Airport when this small Chinese guy comes in, stands next to me, and starts drinking a beer.
 
I asked him, "Do you know any of those martial arts things, like Kung-Fu, Karate, or Ju-Jitsu?"
 
He said, "No, why the hell would you ask me that? Is it because I am Chinese?”
 
"No", I said, "It's because you're drinking my beer, you little prick!”