(Noun) A person in the movoe entertainment business whose job it is to make women's nipples erect for movie scenes. When a woman does not want ice touching her and she doesn't want to do it herself. Usually uses methods of stroking, sucking, licking, teasing, etc.
Did you hear about Tyler, he got a job working as a nipple tweaker in the movie with Jennifer Aniston. Man, I so want to be him.