THANDIE NEWTON shudders at the memory of one of her first Hollywood auditions, because she was ordered to lie back and simulate an orgasm in front of the camera. The CRASH star's humiliation was intensified when she discovered the depraved director subsequently showed the tape at private screenings. Newton refuses to name the movie or director, but she claims the whole experience came to nothing because Jennifer Lopez was given the part. She says, "It didn't occur to me that I could say no. I just did it. With the camera rolling. "Revolting! That's why the transition from childhood to adulthood has to be protected."