The editor of "More Mirth of a Nation: The Best Contemporary Humor, " Michael J. Rosen has been called the unofficial organizer of the National Humor Writer's Union, a pretty good idea for an organization that could offer all kinds of benefits to its struggling members (currently numbering more than 300 who have never been published in "The New Yorker" or aired on NPR). He has been called other things as well, like in third grade, and then in seventh grade especially, by certain older kids known as "hoods," who made his life miserable, specifically during gym class, lunch period and after scho...