Alcohol
A guy is sitting in a bar and turns to the Asian guy next to him and asks:
"Hey do you know, Tae Kwon Do, Jiu Jitsu, Kung Fu or any of that sh*t?"
Offended the Asian man replies: "What you think that just because I'm asian I know martial arts?"
The man replies: "Nah its because you're drinking my f*cking bourbon"