There's this song where a guy sings about 3 little girls and these other chicks say run away alot?

this song where he sings about a girl that's 9 ones 10 and the others 11. he says they are going to run away and never come back.after each verse these girls chime in and say run away in the backround then he sings another verse. i heard it this morning and i am wondering who sings it and what it's called?