Brian McKnight got pretty nasty on his joke-y single, "If Ur Ready to Learn." But that was nothing compared to his latest, which is essentially a mini-promotional jingle for a certain porn site. The folks at TMZ got the scoop on the song, which is censored quite often so you'll have to use your own dirty imagination to figure out what he's saying. That shouldn't be too difficult, though. You can preview the song below.