A Bully walks into a bar, approaches a little guy and karate chops him in the back. When the little guy gets up, the bully says, "That was a karate chop from Korea."
A little later, the huge bully walks back over to the little guy and karate chops him in the back. The huge bully says, "That was a karate chop from China."
The smaller guy leaves the bar, comes back and hits the bully on the back. The bully guy lies unconscious on the floor. The little guy tells the bartender, "Tell him that was a baseball bat from my house."
Obviously, this joke does not condone violence of any kind.
If you are ever in a situation where you are attacked by a bully in a bar, just go outside, and slash his car tires.