A guy is driving around the back woods of Tennessee and he sees a sign in front of a broken down shanty-style house:
'Talking Dog For Sale.' He rings the bell and the owner appears and tells him the dog is in the backyard.
The guy goes into the backyard and sees a nice-looking Labrador retriever sitting there.
'You talk?' he asks.
'Yep,' the Lab replies.
After the guy recovers from the shock of hearing a dog talk, he says 'So, what's your story?' The Lab looks up and says, 'Well, I discover…