"I Wanna Sex You Up" is a song by Color Me Badd in 1991, released as the first single from their debut album C.M.B.. It achieved a huge success in the US, UK and New Zealand, where it reached #1 on the charts. It spent four weeks at No. 2 on the Billboard Hot 100, but topped both the Billboard R&B and Dance charts.

The song spent three weeks at number one on the UK Singles Chart and reached number two on the Billboard Hot 100, behind both "More Than Words" by Extreme and "Rush Rush" by Paula Abdul. It was the 10th best-selling single of 1991 in the UK and the Number 2 song of the year in the US, and in 1992 the song won the group a Soul Train Music Award for Best R&B/Soul Single, Group, Band or Duo and Soul Train Music Award for Best R&B/Soul Song of the Year. It was ranked #40 on Blender's list of the "50 Worst Songs Ever" and VH1's "100 Greatest Songs of the 90s".

The "to the tick tock ya don't stop" soundbite is sampled from Doug E. Fresh's "La Di Da Di." The bassline and the "I know you not gonna sing that song!" soundbite are sampled from Betty Wright's "Tonight is the Night." The chorus melody is from the Shuggie Otis song "Strawberry Letter 23".

A sample of "I Wanna Sex You Up" has been used in the Kardinal Beats remix of by Lemar.

The song has been used in The Fresh Prince of Bel-Air, Two Guys, a Girl and a Pizza Place, and a 1991 episode of the daytime soap opera Days of Our Lives.

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