A rabbi, a Hindu, and a lawyer are in a car.  They run out of gas, and are
 forced to stop at a farmer's house.  The farmer says that there are only 2
 extra beds, and one person will have to sleep in the barn.

 The Hindu says, "I'm humble; I'll sleep in the barn," so he goes out to the
 barn.  In a few minutes, the farmer hears a knock on the door.  It's the Hindu
 and he says, "There is a cow in the barn.  It's against my beliefs to sleep
 with a cow."

 So the rabbi says, "I'm humble; I'll sleep in the barn."  A few minutes later,
 the farmer hears another knock on the door and it's the rabbi.  He says that
 it is against his beliefs to sleep where there is a pig and there is a pig in
 the barn.

 So the lawyer is forced to sleep in the barn.  A few minutes later, there is a
 knock on the door.  It's the pig and the cow.