Rap song with whistling?

[spotlightsweetie]

I was watching a commercial on a new show about wannabe models (?) on The E! and during that commercial, a rap or R&B song was playing and all I could hear was a whistle and then an eight count or two later I hear two whistles in a row. The whistles sounded like the ones from carttoons(or real life i guess) when a guy would whistle at a girl...

Im sorry I have no more information on the song I couldnt hear any of the words.