No Excuse Will Satisfy A Tyrant

A wolf came upon an unprotected lamb, but didn't eat her immediately. 
The wolf decided to find a good excuse to eat the lamb. 
He said, "last year you insulted me very much."
The frightened lamb pleaded, "last year I wasn't yet born."
Then the wolf complained, "you feed from my grass."
The lamb trembled, but said, "I have not yet eaten grass."
"Well," snarled the wolf, "you drink from my well."
"Oh no!," belated the lamb. "I drink only my mother's milk." 
The wolf patience.
"I must have my supper, whatever you say," he snapped. 
Then the wolf grabbed the lamb and ate her.