A guy goes into a store and asks the clerk, "I'd like some Polish Sausage."

The clerk looks at him and says "Are you Polish?"

The guy says, "Well, yes I am, but, if I had asked for Italian sausage would you ask me if I was Italian???
Or if I had asked for German sausage, would you ask me if I was German???
Or if I wanted a taco would you ask if I was Mexican???"

The clerk says, "Well, no."

The guys says, "WELL, why do you ask me if I'm Polish just because I ask for Polish sausage????"