Tossing mortarboards at commencement is all fun and games until somebody gets her head sliced open. This article describes the harrowing experiences of Trudy Kuehner, a graduating senior at Sterling Regional High School 31 years ago, and another 17-year-old graduate who were both injured by a mortarboard. Such injuries are the exception, though, and hat tossing is widely accepted, even encouraged. Besides, the administrator who forbids it almost guarantees that mortarboards will fly--probably at his head. Anglia Ruskin University, in England, was widely ridiculed last year for banning hat tossing. No one is certain when college graduates first considered the aerodynamic potential of mortarboards, but some sources cite June 7, 1912, as the dawn of ceremonial hat tossing. That was the first time graduates of the U.S. Naval Academy threw their "covers" en masse.