I guy gets a knock on his front door and goes to answer it. There is nobody at the door but when he looks down he sees a snail. The snail is looking up at him and says "how are ya?" The man kicks the snail off the doorstep. Ten months later the same man hears a knock at his front door and goes to answer it. He looks down and it's the snail. The snail says "what the hell was that for?"