Bacdafucup is the debut album from hardcore rap group Onyx. The album featured their breakout single, "Slam", which received heavy airplay on both radio and television (MTV and BET), leading the song to reach #4 on the Billboard Hot 100. Bacdafucup was certified Platinum by the RIAA on October 25, 1993. The album is broken down track-by-track by Onyx in Brian Coleman's book Check the Technique.
In addition to Slam, two other singles made it to the charts, "Throw Ya Gunz" and "Shiftee". Shiftee was covered by punk-rock group Mindless Self Indulgence.
In 1998, the album was selected as one of The Source's 100 Best Rap Albums of All Time. Music videos were released for the tracks "Bacdafucup", "Throw Ya Gunz", "Slam", "Shiftee" and "Da Nex Niguz".