This scene is without a doubt the the absolute definition of how a whore should perform. She was obviously trained from a very early stage in her life. Her mannerisms aren't just a role-playing exercise, that's her personality. Arrested Development. The way she behaves when "feeding time" comes is the best part. Her eyes glaze over as she eagerly anticipates each load. Her very unique ability to suck down a huge mouthful of sperm just using her throat is a skill that took practice and encouragement....and positive/negative reinforcement. She is very pleased when she pulls it off, as if it were a reward.