National Lampoon's Class Reunion (1982)

Synopsis
A high school class reunion turns bloody when a former student seeks revenge on his classmates in this black comedy. That mayhem would strike this 20-year reunion seems preordained, given that the name of the school is Lizzie Borden High. Little did anyone expect, however, that this trouble would come from Walter Baylor (Blackie Dammett), a social outcast who was the victim of a humiliating senior year practical joke. Now, two decades later, Baylor has escaped from a mental institution to kill off his tormenters one by one. Class Reunion was the first produced screenplay by John Hughes, a National Lampoon writer who would eventually find a highly successful career as a writer, director, and producer of teen-oriented movies. His debut was exceptionally inauspicious, however, as the film's uncertain mixture of gore and low comedy was met with critical derision and audience indifference. ~ Judd Blaise, All Movie Guide