A farmer and his wife had taken the buck-board, into town for supplies. Once they had loaded up the wagon, they began the long return trip home. After only a short period of time, on the road, the horse began to balk and act up.
The farmer stopped the wagon, got off, walked up to the horse, slapped it across the face and pronounced, "That's One...".
They continued further down the road, when the horse began acting up again. Again, the farmer stopped and got down from the buck-board, walked up to the horse, slapped it, in the face and exclaimed, "That's Two...".
About half way home, the horse began acting up, once again. The farmer grabbed his rifle, got down from the buck-board, walked up to the horse and shot it, in the head.
As the farmer returned to his seat, on the buck-board, his wife began ranting and raving about the fact that he had shot their horse, and demanding to know how he thought they were going to get home.
The farmer turned to his wife, slapped her across the face and said, "That's One..."