A guy was walking up the street and he came to a house with a sign in front of it that said "Talking Dog For Sale." Intrigued, he decided to go in and he asked the dog if he'd lead a useful life, and the dog said that he'd lead a very meaningful life; he said that he lived in the Alps and helped rescue people from avalanches, then he served his country in Iraq, and now he spends his days reading to the residents of a retirement home. Flabbergasted, the man asked the owner of the dog why he'd ever sell a dog like that, and the owner said because the dog's a liar, he's never done any of those things.