In 1990, George Carlin released a comedy album titled "Parental Advisory: Explicit Lyrics." According to a warning in the liner notes: "This recording contains no backmasking or subliminal ...

The Parental Advisory sticker as we know it turns 30 today, as does the first album to officially receive its stamp of disapproval, 2 Live Crew’s Banned In The U.S.A.

Ultimately, by 1990, the PMRC was able to get 19 record companies to put Parental Advisory labels on applicable album s. The practice has only grown in its spread since that time.