One of rock's most defiant rock anthems of all time would have to be Alice Cooper's 1972 ditty, "School's Out." Like the song's title states, its lyrics are self-explanatory -- there's nothing like that adrenaline rush the moment that the final school bell rings declaring an end to the school year, and an entire summer of fun lying ahead. Cooper's venomous and snide vocal delivery is classic Alice -- his style would be carbon copied by many a punk band just a few years later, while the song also features one of rock's great guitar riffs, courtesy of the late Glen Buxton. In the home video Prime Cuts, Alice explains that he came upon the song and album's title from an old Bowery Boys movie, in which one of the characters declares to another "School is out," meaning "to wise up." While the album was one of the band's more progressive outings (courtesy of producer Bob Ezrin), the title track was purposely left raw and unrefined, resulting in one of Alice Cooper's best-known and enduring tracks.