ScumOS

/skuhm'os/ or /skuhm'O-S/ n. Unflattering hackerism for SunOS, the UNIX variant supported on Sun Microsystems's UNIX workstations (see also sun-stools), and compare AIDX, Macintrash, Nominal Semidestructor, Open DeathTrap, HP-SUX. Despite what this term might suggest, Sun was founded by hackers and still enjoys excellent relations with hackerdom; usage is more often in exasperation than outright loathing.