According to the Boston Globe 100+ is the number of panicked Milton residents who called authorities on the evening of April 1, 1980, after a Channel 7 news report that 635-foot Great Blue Hill was erupting?—?complete with archival clips of flowing lava from Mount St. Helens and President Carter and Governor Ed King expressing worry; the program’s producer is fired on April 2. You can find “April Fools’ Day pranks: The good, the bad, and the ugly” here.