What is the name of the song the girls sang in the car in "White Chicks"?

In the film White Chicks (2004) a group of girls refer to the song as their "jam" when it's played on the radio. It's played again two more times in the film: when Terry Crews' character sings this song to Marlon Wayans' character, and when Terry Crews' character sings it to the Wilson twins. Terry Crews' character in the film sings along with it and shakes his head hard when he hears the orchestrated hook.