歌詞: Keri Hilson. No. 1 Sex.

R. Kelly:
N-N-Number one, sex that we're having here girl (Ooh)
This is number one, sex that we're having here girl (Ooh)

Keri:
Girl, I know you've been waiting for me,
Yeah yeah yeah
And I know you've been feening for me,
Yeah yeah yeah
But, you aint gotta wait no more
Girl I'm coming over
Just leave the back door open
And ooh ooh girl I'm hoping that it's tight
Cause what I'm about to do to you tonight
Ooh girl, what I'm about to do to you girl, gon' make your toes curl
I know you aint have this before girl
Cause this is number one.

R. Kelly:
N-N-Number one, sex that we're having is girl (Ooh)
This is number one, sex that we're having is girl (Ooh)
N-N-Number one, sex that we're having is girl (Ooh)
This is number one, sex that we're having is girl (Ooh)

Keri:
This aint nothing girl that you ever had in your life
Them other lames you done been with aint even ch-ch-chip the ice.
Cause what I got up in these draws, you be like Kelly he the boss
He the man, oh my god, he's the pussy champion.

Babygirl I hope you ready cause I'm about to put it down
Babygirl show your experience cause I'm about to show you mine
Lets do the kama sutra, crouching tiger
Girl its pretty, but I hope it's fire
Cause what Im about to do to you will make your girls want it
I'll have you screaming 'You the best',
Now you know it's number one

R. Kelly:
N-N-Number one, sex that we're having here girl (Ooh)
This is number one, sex that we're having here girl (Ooh)
N-N-Number one, sex that we're having here girl (Ooh)
This is number one, sex that we're having here girl (Ooh)

Keri:
Now babygirl, I don't want you think this aint about you
Cause this right here, right now is about you and only you
Can this be love, cause girl you're making me feel
So take my hand, girl I'll be your man
Girl it's number one

R. Kelly:
N-N-Number one, sex that we're having here girl (Ooh)
This is number one, sex that we're having here girl (Ooh)
N-N-Number one, sex that we're having here girl (Ooh)
This is number one, sex that we're having here girl (Ooh)