You are not the one, you are not the one
You can be my two, you can be my two
And one and one, everybody have fun
And one and one, everybody have fun
(And one and two, now you know what to do)

from Big Boi – Back Up Plan Lyrics on Rap Genius

Meaning

Once again, Big Boi reminds his jump-off that she is not the woman he would marry (the one) but that they’re just together for sexual reasons (you can be my two).

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