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

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

 The guy, clearly offended, says, "Well, yes I am. But let me ask you
 something."

 If I had asked for Italian sausage would you ask me if I was Italian?
 Or if I had asked for German bratwurst, would you ask me if I was
 German?
 Or if I asked for a kosher hot dog would you ask me if I was Jewish?
 Or if I had asked for a taco would you ask if I was Mexican?

 Would ya, huh?  Would ya?"

 The clerk says, "Well, no."

 With deep self-righteous indignation, the guy says, "Well, all right
 then,
 why did you ask me if I'm Polish just because I ask for Polish sausage?"

 The clerk replies, "Because this is Home Depot."