A guy walks into a bar, sits down and orders a beer. He says to the bartender, "Hey, want to hear a good Polack joke?"
The bartender says, "Tell you what.... I'm Polish. See those two big guys playing pool? They're Polish. See those other two guys sitting at the end of the bar? They're Polish. You still want to tell your "Polack" joke?"
The man replies, "Not if I'm gonna have to explain it five fucking times."