Nevermind wasn't always going to be the title of the album.
Sheep was Nirvana's working title for their sophomore album. This was apparently a snide remark about the people who might buy the album, as Cobain wrote in his journal, "Because you don't want to because everyone else is." According to bassist Krist Novoselic, the title reflects the band's cynicism.
However, some of the earliest recorded descriptions of hypnosis date back to 1500 B.C. in ancient Egypt.