a man hears a knock at his front door.he opens the door an no is there, so goes back his front room.there is another knock. he opens the door and looks down and ther is a snail, there.he looks around.picks up the snail and chucks it across the road.
25 years later.there is a knock at the door.the same guy opens the door and sees a snail...
the snail says 'WHAT THE HELL WAS THAT ABOUT!!'