**WARNING: Explicit language**
The song is titled "P.O.P. (Power of P**sy)" and TMZ got a clip -- yes, that's with a p. Chyna doesn't rap, but she caresses her boobs, her butt and her P while she dances next to the rapper ... and a good dancer she is.
TMZ was told the song was not inspired by Rob -- they say it's way more universal. But here's the thing. There's a lyric, "She took you for everything, You let her do it again" and as Belly raps, Chyna winks at the camera.
Also, sorry for getting this stuck in your head. That's the P.O.P. ... the P.O.P. ...