There's something about being any kind of entertainer that is acting. You have to put on a show. Things you wouldn't do in your life, you do on stage. You have to let go. And that's extra hard for rappers. We have a tendency to, quote unquote, keep it real. As an actor, you have to be able to humiliate yourself. Do whatever it takes.
I'm not one of those pop guys. That's for wimps like Vanilla Ice.