I always knew that while nine Jews are very nice, ten are needed for a minyan, and when the tenth arrives everyone beams. I just learned that the eleventh is just as vital. This really happened. When the eleventh entered, someone said, "Thank goodness." The eleventh arrival responded, "You had a minyan already." The other speaker said, "You make the 'pisher' and now I can leave the room and go to the bathroom!"