We all know the verses of his insanely catchy signature tune, but what else do we really know about the rapper-turned-reality TV star, and the things that make him tick? It turns out, he published a book on his private thoughts and his motivations back in 1991, and it explains a lot about the man who has self-professed that "to the extreme, I rock a mic like a vandal."Let's take a look at the secret life of Robert Van Winkle, a.k.a. Vanilla Ice!The man cuts his own hairMCenterThat's right, the classic pompadour that so many of