Carey explained to Billboard
magazine that O.O.C. is short for "Out Of Control": "Jay-Z said something to me that was really interesting, and I don't even know if he really remembers this. He's known me for a long time, and he's like, 'You need to use some of your phrases in your music.' I have my own little slang that I make up and say stupid stuff just for laughs. (On) the song 'O.O.C.' - that's a Swizz Beatz track - it means, 'Out of control.' So me and my friends will say that to each other, 'OK, you're a little O.O.C. right now, tone it on down.' Da Brat, who's a really good, close friend of mine since we worked on 'Always Be My Baby
' - we wrote the lyrics together, and it was so fun. By saying (sings), 'I get so O.O.C./So out of control, baby' we could explain it. When somebody was helping me type up the lyrics, and they wrote 'Out of Control' in parentheses (by the song title), I was like, 'Get rid of that. It's 'O.O.C.'! Let them figure it out! It's not that tough! I say it in the next line!'"