

It features Busta Rhymes, the Flipmode Squad, and Carey lounging around an expensive mansion as they debate whether they "know what they want". The music video was directed by Chris Robinson. The song has been sampled in the song "I Got You" by Trippie Redd (2020) and "Where I Belong", the 2021 follow up duet by Rhymes and Carey. The song has sold 175,000 copies in the UK.

The song charted at number 3 on the Billboard Hot 100 making it Rhymes' highest charting song at the time until 2005 and Carey's then most-recent top five hit since her 2001 single, " Loverboy". editor Dalton Higgins wrote that in this duet Busta "croons". In Billboard, Brian Garrity wrote that on "I Know What You Want," Busta Rhymes "takes an R&B turn". The plotline for the video for "I Know What You Want" was continued in the video for the 2021 single " Where I Belong", in which Rhymes collaborated again with Carey. Columbia Records later included it on her first remix album The Remixes (2003) and the British and Japanese reissues of Carey's ninth studio album Charmbracelet (2002). For Carey, it was a return to form after a string of unsuccessful singles, and it became one of her biggest hits in years. "I Know What You Want" stayed in the top forty for twenty-one weeks, and was ranked 17 on the Hot 100 2003 year-end chart.

Rhymes' previous single, "Make It Clap," had failed to reach the top forty on the U.S. Released as the second single from It Ain't Safe No More on February 24, 2003, it was a hit across the world, peaking at number 3 in the United States, Australia, and the United Kingdom. It also includes verses from Rhymes' group, the Flipmode Squad: Spliff Star, Baby Sham, Rah Digga, and Rampage. The song is a duet with American singer Mariah Carey, and was co-written by Rah Digga, Rampage, Rick Rock, and Spliff Star. YeahShorty I know what you needI got everything you needI promise I ain't gonna hold out eitherI'ma give it all to you babyIt's on, bust it - Baby if you give it to meI'll give it to youI know what you wantYou know I got itBaby if you give it to meI'll give it to youAs long as you wantYou know I got it - Baby if you give it to meI'll give it to youI know what you wantYou know I got itBaby if you give it to meI'll give it to youAs long as you wantYou know I got itWe been together for a few yearsShared a few tearsCalled each other nicknamesLike Sugar Plum and Poo BearI'm always on the roadI'm hardly ever homeAlways busy this busy thatCan't talk on the phoneI know you aggrevatedWalk around frustratedYa patience gettin' shortHow long can you tolerate itListen ma I'm just motivatedI do this for usStep on the grind tryin' to elevate it nowHey yo to really be honestYou stuck with me through my whole struggleCan't express the wordsHow much the kid loves yaI'ma stand as a man never above yaI can tell that you different from mostSlightly approach youAnd that ill shit about itWe gon' sex every dayBut when we sex we teaseIn a passionate wayI love the way you touch itThose little elaborate waysGot the guard feelin' releasedTo relax for the dayIt's on you maShh, mami listenI feel ya love for me babyAnd how it move through youI been longin' for the momentTo talk the truth to youListen, I'm never homeI always get up and goPuttin' you through the unnecessary rigga-ma-roI never meant to put a thousand poundsOf stress on ya headI love the way we sleepAnd how we always cuddle in bedBaby, I stay embracin' ya patienceSheddin' ya tears with meI ask you my mamiPlease continue to bear with meWe started out brokeConstantly on a rollCuttin' up in the streets like we would never get oldWent from Lucy's and buses to fifty cent sodasAnd Novas to Hondas to Lexus to RoversMad years passedStill got each other backWord is bond never screw none of these industry catsWe like Scull and MulderWalkin' shoulder to shoulderMilkin' this game watchin' our seeds gettin' olderYes you know I'll die for youAnd ya know I'll ride with youI will always try with youAnd give ya my love and cry with youI will climb a mountain highUntil I was up to touch the skySo baby come and get more close to meThis is where your love is supposed to beI pull up to the house in a yellow LamborghiniIt's been a few months in PA you haven't seen meYa lookin' good in that Gucci bikini38 carats ya ring lookin' freezyNo matter what I do in the world you never leave meFall back ma I'll make ya lifestyle easyI appreciate the things ya do to please meLookin' at my daughter you'll never do me greasyFlipmode Records, J RecordsDef Jam RecordsBusta Rhymes." I Know What You Want" is a song written by American rapper Busta Rhymes, and produced by Rick Rock for Rhymes' sixth album It Ain't Safe No More., released on November 26, 2002.
