Both Bill and Eddie burst out laughing this time, and Ben joined them. It hurt his stomach to laugh but he laughed anyway, shrilly and a little hysterically. Finally he had to sit down on the bank, and the plopping sound his butt made when it hit the dirt got him going all over again. He liked the way his laughter sounded with theirs. It was a sound he had never heard before: not mingled laughter—he had heard that lots of times—but mingled laughter of which his own was a part.
