A lady from the city and her traveling companion were riding the train through Vermont when she noticed some cows. "What a cute bunch of cows!" she remarked. "Not a bunch, herd", her friend replied. "Heard of what?" "Herd of cows." "Of course I've heard of cows." "No, a cow herd." "What do I care what a cow heard. I have no secrets to keep from a cow!"