One of the boys replied, "We're having a contest and whichever one of us can tell the biggest lie will get to keep the dog."
"You boys shouldn't be having a contest telling lies!" he exclaimed. He then launched into a ten minutes sermon against lying, beginning with, "Don't you boys know it's a sin to lie," and ending with, "When I was your age, I never told a lie."
There was dead silence for about a minute. Just as the Minister was beginning to think he'd gotten through to them, the smallest boy gave a deep sigh and said, "All right, give him the dog."