A baker regularly purchased butter from a neighboring farmer. One day, he suspected that a pound of butter, which should have weighed three pounds, was lighter than it appeared. He began weighing the butter periodically and found that it was consistently underweight, meaning he was overpaying each time.
Furious, the baker filed a lawsuit with the law enforcement agencies, and the case eventually reached a judge.
“Do you not have a scale at home?” the judge asked the farmer.
“Yes, Your Honor, I do have a scale,” the farmer replied.
“Do you have accurate standard weights?”
“No, Your Honor. I don't need standard weights.”
“If you don't have standard weights, how do you weigh the butter?”
“It's quite simple,” the farmer answered. “During the time the baker was buying butter from me, I was also buying bread from him. I always requested the same weight of bread and used these loaves as the weights for measuring the butter. If the weights were inaccurate, it was not my fault, but his.”
In the end, the judge found the farmer not guilty, and the baker was left to bear the costs of the litigation himself.