Libido is the fourth album from Buck-O-Nine and was originally released in 1999 on TVT Records. The album marks a slight musical departure for the band, as they expanded their musical style slightly to include more rock and pop influence. Overall, however, the album remains rooted in the band's traditional style of ska, punk rock and reggae influences. Libido features Philadelphia drummer Chuck Treece, who was brought on board for pre-production and recording sessions, while the band auditioned drummers to replace original drummer Steve Bauer.
The idea for the album cover was taken from an old magazine advertisement from the 1970s. The photo featured a stereotypical 1970s playboy-type staring over his shoulder at the girl in the bikini. The band was unable to secure a release to use the original photo, so instead they re-created it on the shores of Pacific Beach in San Diego, CA – not far from the location where the "My Town" video was filmed.