Watch Free Online HD Moviesjoy. Slutpira hosts a quartet of short horror films. In "Psycho Vixens," a young man is first annoyed, then attacked, by the five female Satanists who live upstairs. In "Songs in the Key of Satan," a timid girl harassed by punk-rock posers buys a guitar at a garage sale, accidentally invokes Satan, and finds her way to bloody revenge. In "Numb Skulls," a possessed skull punishes a student's would-be rapists. And in "A Fetal Mistake," an infant accidentally killed by babysitters is resurrected and goes on a killing spree before being dispatched by an eccentric animal-control officer.