Two graduate students in "Religious Studies" at the University of Arkansas are walking down the street...

...when they come upon a Catholic Priest with his right arm in a cast. One of the students knows the Priest, so they stop to visit.

"Father Mike, it's good to see you. What in the world happened to your arm?"

Father Mike replies, "It was the silliest thing. I slipped in the bathtub, fell, and broke it in two places."

"That's a shame Father Mike. Well, take care of it, and I'll see you around."

The two Arkie students walk on for a while, then one asks the other, "Cletus, what is a bathtub?"

Cletus answers, "Rufus, how in the hell should I know? I ain't no Catholic."