“1990-Sick (Kill ‘em All)” is a single featured on the album with the same name 1990-Sick. The song peaked at number 91 on the Billboard Hot R&B/Hip-Hop Songs and at number 18 on the Billboard Rap Songs.

Due to extreme amounts of profane language and violent content in the lyrics, the lyrics in the music video version for “1990-Sick” are heavily altered, to the point where the lyrics are unrecognizable when compared to the original uncensored album version. A version of the song without MC Eiht was also made and included on the 1990-Sick album.