"All I gotta do is... act naturally" taken from "maximum entertainment" by Ken Webster. If you want to see something unnatural, just ask a magician/mentalist to perform for you and then, you will start to see the person infront of you change to become totally different person. You will start to notice, what he saying is obviously memorized and lifeless. He doesn't seem convinced by what he is saying because he is just saying it to say "something" (script). The nice person who was infront of you disappears and the guy who says mean "lines" (jokes) emerges. In your head, you are wondering why is this person acting weird and different all of the sudden. The performance will fall flat before you see the climax. So the question is, how do you define being natural? How do you make it practical, when you are performing?