You just gotta know the theory . . . see, there were these two warring indian tribes.. One day, this tribe makes a raid on the enemy camp and kidnaps the chieftain's son. This chief it seems had two wives, only one son. Well, in retaliation, the chief got his braves together and they went and raided the first tribe's camp and kidnapped that chief's only wife.
A meeting was suggested for the two chiefs to come together and discuss terms for peace. The one chief set up a big tent in a neutral area, with a big fire pit in the center and two chairs (one for each chief). Next to his chair, the chief also laid out two buffalo skin rugs for his two grieving wives to join him. The other chief arrived, bringing his prisoner with him, and saw the first chief with his two wives and noticed that the empty chair and the also empty bear skin rug next to it.
"Be seated. We discuss peace treaty." said the first chief.
"Where my squaw?" demanded the second chief, "She must be here on skin next to me, as your squaws next to you. I bring son with me."
The first chief realized he had forgotten his hostage and quickly sent his braves to get her. Back at their camp, the braves grabbed the chief's wife, but couldn't find a spare horse for her to ride, so in desperation, they used the only other mount available, the tribes pet hippopotamus.
Meanwhile, the two chiefs argued back and forth, unable to come to a compromise. An elder from a third tribe was brought in to mediate. He looked at the one chief with his to wives and their son, the other chief's prisoner.
"Want son back." Said the chief.
"Want wife back" Said the other chief.
"Is good trade?" Asked the first.
The mediator looked at the second chief and the empty bear skin, and them back at the chief who had no prisoner. The mediator looked sad. But just then, the group of braves rode up with the hostage wife, and the mediator got a big smile on his face.
The turned to the two chiefs and spoke. "It well know. It proven fact." he said, "Great, wise brave from long, long ago . . . the warrior Pie That No Rust have theory. He say that squaw of hippopotamus equal to son of squaws of other two hides."