A mathematician, physicist, and an engineer; a priest, a rabbi, and a minister; a Protestant, a Catholic, and a Jew; a Frenchman, a Spaniard, and an Italian; a black, a white, and an Asian; a Russian, a Czech, and a Polishman; an Englishman, an Irishman, and a Welshman; and a blond, a brunette, and a redhead all walk into a bar.

The bartender turns to them and says, "What is this? A joke?"