This guy was washing the dishes in his kitchen and he heard a knock at the door. He opened the door and there was nobody there. Just as he was closing it he looked down and saw a snail.
"What do you want?" he asked the snail.
"Can I have a glass of water please?" replied the snail.
"No, clear off!" shouted the guy and he punted the snail down to the bottom of the garden.
Two Years later he was in the kitchen again and he heard a familiar knock at the door. He opened the door, looked down, and saw a snail. Before he could say a word the snail shouted "What the hell was that all about?"