An old farmer hauling a load of manure was stopped by a state trooper. “You were speeding,” the cop said. “I’m going to have to give you a ticket.”
“Yep,” the farmer said as he watched the trooper shoo away several flies. “These flies sure are terrible,” the trooper complained. “Yep,” the farmer said, “them are circle flies.”
“What’s a circle fly?” asked the trooper. “Them flies that circle a horse’s tail,” answered the farmer, “Them are circle flies.”
“You wouldn’t be calling me a horse’s ass, would you?” the trooper angrily asked. “Nope, I wouldn’t,” the farmer replied. “But you just can’t fool them flies.”