It was learned Monday that male students in Riverview Middle Schools fourth-period gym class are preparing, as they do before every scheduled hour of physical education, for mandatory exposure of their near-hairless, tiny, adolescent penises to the scrutiny of their peers. 'Everyones got to be completely nude,' said gym teacher Randall Slavin. 'Anyone refusing to participate in the group nudity will be disciplined under school policy.' Said seventh-grader Tim Hilfer: 'Id known James Ketchner ever since he and his mom moved here from Phoenix. Weve been in school together a long time, but in all those years Id never seen his penis. Now, I see his penis five days a week, and he sees mine.' 