A Department of Agriculture representative stopped at a farm and talked with the old farmer.
I'm going to inspect your farm."
The old farmer said, "You better not go in that field."
The Agriculture representative said in a wise tone, "I have the authority of the Government with me. See this card? I am allowed to go wherever I wish on agricultural land."
So, the old farmer went about his farm chores. Later, the farmer heard loud screams and saw the Department of Agriculture representative running for the fence and close behind was the farmer's prize bull. The bull was madder than a full nest of hornets and the bull was gaining at every step.
The old farmer called out, "Show him your card!"