They were four clean-cut kids who were having lots of fun, and they were driving Yossarian nuts. He could not make them understand that he was a crotchety old fogey of twenty-eight, that he belonged to another generation, another era, another world, that having a good time bored him and was not worth the effort, and that they bored him, too. He could not make them shut up; they were worse than women. They had not brains enough to be introverted and repressed.